Write a program to calculate perimeter of rectangle. Take sides, a & b, from the user

Formula to calculate perimeter of rectangle
2(l+b)

where l = length, b = width

Code :

# include<stdio.h>

// main function

int main() {

    // declaring variable type

    int a,b;

    // taking input

    printf("Enter Length : ");

    scanf("%d", &a);

    printf("Enter width : ");

    scanf("%d", &b);

    // calculate and print Perimeter

    printf("Perimeter of Rectangle %d", 2*(a+b));

    return 0;

}

How to execute the C Code :

Open the terminal in the path folder and write the commands as follow :

gcc filename.c

./a.exe

(use ./a.out in mac os)

Output :

Enter Length : 10

Enter width : 10

Perimeter of Rectangle 40