Area of Circle Program in C++ and C

Area of Circle Program in C++ and C

Area of Circle is A=πr² and to solve the mathematical problems is the part time job of C++. In this article we will deal with the area of circle calculation program in both C++ and C language. We will develop a program in which user will enter the radius of his given circle and the program will print him area using the formula A=πr² .

Programmer will declare a variable “A” to store area of circle, use 3.14 in place of π and r² by r*r. so the original statement will be like that.

A=3.14*(r*r);

Area of Circle Program in C++

First we are developing the C++ program to find the area the code for this program is as under.

 

Code

//date 27 january 2019

//program to find area of circle using function call by value

#include<iostream>

using namespace std;

int area(int);

int main()

{

            int radius;

            cout<<"Enter the radius to Find Area \n";

            cin>>radius;

            cout<<"Area ="<<area(radius);

return 0;

}

int area(int r)

{

            int a;

            a=3.14*r*r;

            return a;

}

 

Output

Here is the sample output of this program. Calculate area of the circle from radius.

 

 

 

Area of Circle Program in C

This is the version C of the above program. This version will perform the same task as performed above with C++ language but this program will use C language.

 

Code

//date 27 january 2019

//program to find area of circle using function call by value

#include<stdio.h>

int area(int);

int main()

{

            int radius;

            printf("Enter the radius to Find Area \n");

            scanf("%d",&radius);

printf("Area =%d",area(radius));

return 0;

}

int area(int r)

{

            int a;

            a=3.14*r*r;

            return a;

}

 

 

Output

Here also the same output is coming of this program. Calculating area from radius same like previous C++ language program.

 

 

 

Conclusion

Finally, we concluded that tasks which are performed in the C++ language can be performed in C language in some cases but not at all. Because C++ in some context such as objects and classes is more advanced than C language.

 

Thank You and I hope you will easily understand this simple code but if not don’t worry. Contact us we will assist you by our best.