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Added language specific readme docs
Added short README.md in each src folders for a quick language syntax overview. More work needs to be done in this front.
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‎src/c/README.md

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## C Language Basic Syntax Review
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C language is one of the most popular general-purpose programming language developed by Dennis Ritchie at Bell laboratories for UNIX operating system. The initial release of C Language was in the year 1972. Most of the desktop operating systems are written in C Language.
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Key features:
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- Structured Programming
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- Popular system programming language
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- UNIX, MySQL and Oracle are completely written in C.
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- Supports variety of platforms
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- Efficient and also handle low-level activities.
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- As fast as assembly language and hence used as system development language.
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#### 1. Read inputs
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````c
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#include <stdio.h>
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int main()
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{
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char name[50];
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printf("Enter name:");
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scanf("%s", &name);
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printf("Hello %s" , name );
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return 0;
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}
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````
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#### Loops and Conditionals
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##### 2. If-Else:
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When ever you want to perform a set of operations based on a condition if-else is used.
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```c
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if(conditional-expression) {
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// code
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} else {
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// code
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}
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```
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You can also use if-else for nested Ifs and if-else-if ladder when multiple conditions are to be performed on a single variable.
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##### 3. Switch:
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Switch is an alternative to if-else-if ladder.
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````c
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switch(conditional-expression) {
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case value1:
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// code
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break; // optional
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case value2:
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// code
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break; // optional
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...
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default:
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// code to be executed when all the above cases are not matched;
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}
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````
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##### 4. For:
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For loop is used to iterate a set of statements based on a condition.
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````c
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for(Initialization; Condition; Increment/decrement){
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// code
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}
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````
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##### 5. While:
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While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
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````c
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while(condition) {
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// code
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}
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````
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##### 6. Do-While:
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Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.
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````c
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do {
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// code
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} while (condition);
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````
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#### 7. Arrays
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Array is a collection of similar data which is stored in continuous memory addresses. Array values can be fetched using index. Index starts from 0 to size-1.
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1. One dimentional Array: ` data-type array-name[size];`
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2. Two dimensional array: `data-type array-name[size][size];`
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#### 8. Functions
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Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity.
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Two types of functions are present in C
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1. Library Functions: Library functions are the in-built functions which are declared in header files like `printf()`, `scanf()`, `puts()`, `gets()` etc.,
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2. User defined functions: User defined functions are the ones which are written by the programmer based on the requirement.
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##### 9. How to declare a Function
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```c
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return_type function_name(parameters);`
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```
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##### How to call a Function
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```c
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function_name (parameters)
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```
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##### How to define a FunctionHow to define a Function
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```c
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return_type function_name(parameters) {
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//code
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}
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```

‎src/cpp/README.md

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## C++ Language Basic Syntax Review
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C++ is one of the most popular programming languages. C++ can be found in todays operating systems, Graphical User Interfaces, and embedded systems. C++ is an object-oriented programming language which gives a clear structure to programs and allows code to be reused, lowering development costs. Note, C++ is an extension of C.
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Key features:
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- Supports different platforms like Windows, various Linux flavours, MacOS etc
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- C++ supports OOPS concepts like Inheritance, Polymorphism, Encapsulation and Abstraction.
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- Case-sensitive
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- C++ is a compiler based language
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- C++ supports structured programming language
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- C++ provides alot of inbuilt functions and also supports dynamic memory allocation.
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- Like C, C++ also allows you to play with memory using Pointers.
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#### 1. Read inputs
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````cpp
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#include <iostream>
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#include <string>
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using namespace std;
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int main()
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{
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string name;
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cout << "Enter name:";
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getline (cin, name);
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cout << "Hello " << name;
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return 0;
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}
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}
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````
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#### Loops and Conditionals
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##### 2. If-Else:
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When ever you want to perform a set of operations based on a condition if-else is used.
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```cpp
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if(conditional-expression) {
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// code
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} else {
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// code
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}
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```
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You can also use if-else for nested Ifs and if-else-if ladder when multiple conditions are to be performed on a single variable.
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##### 3. Switch:
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Switch is an alternative to if-else-if ladder.
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````cpp
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switch(conditional-expression) {
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case value1:
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// code
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break; // optional
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case value2:
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// code
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break; // optional
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...
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default:
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// code to be executed when all the above cases are not matched;
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}
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````
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##### 4. For:
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For loop is used to iterate a set of statements based on a condition.
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````cpp
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for(Initialization; Condition; Increment/decrement){
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// code
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}
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````
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##### 5. While:
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While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
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````cpp
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while(condition) {
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// code
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}
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````
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##### 6. Do-While:
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Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.
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````cpp
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do {
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// code
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} while (condition);
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````
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#### 7. Arrays
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Array is a collection of similar data which is stored in continuous memory addresses. Array values can be fetched using index. Index starts from 0 to size-1.
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1. One dimentional Array: ` data-type array-name[size];`
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2. Two dimensional array: `data-type array-name[size][size];`
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#### 8. Functions
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Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity.
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Two types of functions are present in C++
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1. Library Functions: Library functions are the in-built functions which are declared in header files like `floor(x)`, `tolower(x)`, `toupper()` etc.,
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2. User defined functions: User defined functions are the ones which are written by the programmer based on the requirement.
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##### How to declare a Function
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```cpp
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return_type function_name(parameters);`
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```
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##### How to call a Function
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```cpp
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function_name (parameters)
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```
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##### How to define a FunctionHow to define a Function
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```cpp
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return_type function_name(parameters) {
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//code
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}
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```

‎src/go/README.md

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## Go Language Basic Syntax Review
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Go language is an open-source, statically typed programming language by Google. Go is highly recommended for creation of highly scalable and available web applications.
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Some of the products developed using Go are Kubernetes, Docker, Dropbox, Infoblox etc.
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Key features:
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- Fast compilation
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- Easy to write concurrent programs
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- Simple and concise syntax
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- Supports static linking
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- Opensource and huge community support.
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#### 1. Read Inputs
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````go
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package main
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import "fmt"
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func main() {
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var name string
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fmt.Scanf("%s", &name)
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fmt.Printf("Hello %s", name)
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}
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````
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#### 2. Variables
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````elixir
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var varible-names datatype;
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````
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#### 3. Loops and Conditionals
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##### If-Else and If-Else:
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When ever you want to perform a set of operations based on a condition If is used.
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```go
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if(conditional-expression) {
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// code
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}
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```
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When there is requirement to add code for false condition to IF-ELSE block.
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```go
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if(conditional-expression) {
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// code
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} else {
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// code
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}
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```
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When there is requirement to have nested IF-ELSE block.
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```go
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if(conditional-expression) {
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// code
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} else if(conditional-expression) {
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// code
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} else {
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// code
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}
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```
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##### Switch:
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Switch is an alternative to If-Else-If ladder.
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```go
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switch conditional-expression {
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case value1:
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// code
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break; // optional
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case value2:
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// code
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break; // optional
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...
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default:
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// code to be executed when all the above cases are not matched;
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}
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```
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*Note: Go doesn't have while or do-while loops like in C.*
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##### For:
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For loop is used to iterate a set of statements based on a condition.
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````go
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for Initialization; Condition; Increment/decrement {
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// code
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}
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````
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#### 4. Functions
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Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity.
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```go
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func functionname(parameter-name type) returntype {
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//code
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}
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```

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