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  1. #include<stdio.h>
  2.  
  3. int main() {
  4.  
  5.    int rad;
  6.    float PI = 3.14, area, ci;
  7.  
  8.    printf("\nEnter radius of circle: ");
  9.    scanf("%d", &rad);
  10.  
  11.    area = PI * rad * rad;
  12.    printf("\nArea of circle : %f ", area);
  13.  
  14.    ci = 2 * PI * rad;
  15.    printf("\nCircumference : %f ", ci);
  16.  
  17.    return (0);
  18. }
Success #stdin #stdout 0s 2116KB
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stdout
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Enter radius of circle: 
Area of circle : 12.560000 
Circumference : 12.560000
https://ideone.com/ssyQdj
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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