Area of Circle , Area of Triangle and Area of Rectangle using C Programming Language

1. Write a Program to Take input from user Print Area Of Circle c program.
2. write a Program To take input from user print Area of Triangle c Program .
3. Write a Program to Take input from user Print Area of Rectangle c Program.

1.
Write a Program to Take input from user Print Area Of Circle c program - Program Code. 

/* Write a Program to take input
   from user print area of circle */
   #include<stdio.h>
   #include<conio.h>
   #define PI 3.14
   int main()
   {
float area,radius;
clrscr();
printf("Enter the value of radius :");
scanf("%f",&radius);
area = PI * radius *radius;
printf("Area of circle is %f",area);
getch();
return 0;
   }

PROGRAM :-

OUTPUT :-

Download Program source code 

2.
write a Program To take input from user print Area of Triangle c Program - Program Code. 

/* Write a Program to take input
   from user print area of triangle */
   #include<stdio.h>
   #include<conio.h>
   int main()
   {
float area,h,b;
clrscr();
printf("Enter the value of h :");
scanf("%f",&h);
printf("Enter the value of b :");
scanf("%f",&b);
area = (h*b)/2;
printf("Area of Triangle is %f",area);
getch();
return 0;
   }

PROGRAM :-

OUTPUT :-

Download Program source code

3.
Write a Program to Take input from user Print Area of Rectangle c Program - Program Code.

/* Write a Program to take input
   from user print area of rectangle */
   #include<stdio.h>
   #include<conio.h>
   int main()
   {
int area,l,w;
clrscr();
printf("Enter the value of l :");
scanf("%d",&l);
printf("Enter the value of w :");
scanf("%d",&w);
area = l*w;
printf("Area of rectangle is %d",area);
getch();
return 0;
   }

PROGRAM :-

OUTPUT :-

Download Program source code