C Program to Calculate Area of a Circle


The formula to calculate the area of circle is π(pi)*r^2. The value of π is equal to 3.14(approx)



  1. //C Program to calculate area of a circle

  2. 

  3. #include<stdio.h>

  4. 

  5. int main()

  6. {

  7.     float r, area;

  8.     printf("Enter radius of the circle: ");

  9.     scanf("%f", &r);

  10.     

  11.     area= 3.14*r*r;

  12.     

  13.     printf("Area = %f", area);

  14.     return 0;

  15. }

Output


Output!
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