Answer to Question #303854 in C for Chris

Question

Write a C program that is going to use function to calculate the perimeter of a circle

Answer 1

#include <stdio.h>

double perimeter(double r) {
  return 2 * 3.1415 * r;
}

int main() {
  double r;
  scanf("%f", &r);
  printf("radius=%.3f", perimeter(r));
  return 0;
}