By | 27.12.2016

# Square of a Number using inline function

Write a C++ program to find Square of a Number using inline function. Here’s simple program to find square of float and integer using inline function in C++ Programming Language.

## What are Functions ?

Function is a block of statements that performs some operations. All C++ programs have at least one function – function called “main()”. This function is entry-point of your program.

A function declaration tells the compiler about a function’s name, return type, and parameters. A function definition provides the actual body of the function.

## Defining a Function : :

The general form of a C++ function definition is as follows:

return_type Function_Name( list of parameters )
{
//function’s body
}

• return_type : suggests what the function will return. It can be void, int, char, some pointer or even a class object.
• Function_Name : is the name of the function, using the function name it is called.
• Parameters : are variables to hold values of arguments passed while function is called. A function may or may not contain parameter list.
• Function body : is he part where the code statements are written.

Below is the source code for C++ program to find Square of a Number using inline function which is successfully compiled and run on Windows System to produce desired output as shown below :

### SOURCE CODE : :

```/* C++ program to find Square of a Number using inline function  */

#include<iostream>
using namespace std;

class square
{
private:
int n,r;
float n1,r1;
public:
void input();
void calc();
void display();

};

inline void square::input()
{
cout<<"Enter an integer :: ";
cin>>n;
cout<<"\nEnter a float no. :: ";
cin>>n1;

}

inline void square::calc()
{
r=n*n;
r1=n1*n1;
}

inline void square::display()
{
cout<<"\nSquare of integer [ "<<n<<" ] = "<<r<<"\n";
cout<<"\nSquare of float [ "<<n1<<" ] = "<<r1<<"\n";
}

int main ()
{
square s;
s.input();
s.calc();
s.display();

return 0;
}```

### OUTPUT : :

```/* C++ program to find Square of a Number using inline function  */

Enter an integer :: 4

Enter a float no. :: 3.5

Square of integer [ 4 ] = 16

Square of float [ 3.5 ] = 12.25

Process returned 0```

Above is the source code for C++ program to find Square of a Number using inline function which is successfully compiled and run on Windows System.The Output of the program is shown above .

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