C Program to calculate the area of a rectangle

Basic program to calculate the area of a rectangle in c

#include <stdio.h>  
int main()  
{  
    int length = 20;  
    int breadth = 30;
    
    int area = length * breadth;
    
    printf("Area of the rectangle = %d", area);  
}

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Basic program to take inputs from users and calculate the area of a rectangle in c

#include<stdio.h>
#include<conio.h>
 
int main() {
   int length, breadth, area;
 
   printf("\nEnter the Length of a Rectangle in meter: ");
   scanf("%d", &length);
 
   printf("\nEnter the Breadth of a Rectangle in meter: ");
   scanf("%d", &breadth);
 
   area = length * breadth;
   printf("\nArea of Rectangle : %d square meter", area);
 
   return 0;
}

Output:

Enter the Length of a Rectangle in meter : 20
Enter the Breadth of a Rectangle in meter : 30
Area of Rectangle : 600 square meter

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Basic program to calculate the area of a rectangle by creating function in c

#include <stdio.h>

int areaRectangle(int l, int b);

int main()
{
    int l, b, area;
    printf("\nEnter the length : ");
    scanf("%d", &l);

    printf("\nEnter the breadth : ");
    scanf("%d", &b);

    area = areaRectangle(l, b);

    printf("\nArea of the Rectangle : %d", area);

    return 0;
}

int areaRectangle(int l, int b)
{
    return l * b;
}

Output:

Enter the Length : 20
Enter the Breadth : 30
Area of the Rectangle : 600

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