Calclute area using C - CodeMub

// TO CALCULATE  AREA OF RECTANGLE

   #include <stdio.h>
   int main()
  {
    int l,b,area;
    printf("\nEnter Length : ");
    scanf("%d",&l);
    printf("\nEnter Bredth : ");
    scanf("%d",&b);
    area=l*b;
    printf("Area of rectangle :%d",area);

    return 0;

  }

Output :

Length = 5
Breadth = 7
Area of rectangle = 35

Area of Square : 

  // TO CALCUALTE AREA OF SQUARE
  
  #include <stdio.h> 
   int main()
  {
     int s,area;
     printf("\nEnter value of a:");
     scanf("%d",&a);
     area=s*s;
     printf("/n Area of Square is  : %d",area);
     return 0;
   }

Output :

Sside of square (s) = 5
Area of square = 25

Area of Triangle : 

  // TO CALCUALTE AREA OF TRIANGLE
  
 
 #include <stdio.h>
 int main()
  {
   int b,h,area;
   printf("\nEnter Base :");
   scanf("%d",&b);
   printf("\nEnter height :");
   scanf("%d",&h);
   area=0.5*(b*h);
  printf("Area of triangle is %d",area);
  }