C program to calculate area of circle using pointer

C program to calculate area of circle using pointer

Output:

Enter the radius of the circle: 2
The area of circle with radius 2.000000 is 12.560000

Implementation:

#include <stdio.h> void calculatearea(float *area,float radius) { *area=3.14 * radius * radius; } int main(void) { float area,radius; printf("Enter the radius of the circle:\n"); scanf("%f",&radius); calculatearea(&area,radius); printf("The area of circle with radius %f is %f",radius,area); return 0; }