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  1. #include <stdio.h>
  2.  
  3. #define PI 3.14159
  4.  
  5. int main() {
  6.     float radius, area;
  7.  
  8.     // Asking the user to input the radius
  9.     printf("Enter the radius of the circle: ");
  10.     scanf("%f", &radius);
  11.  
  12.     // Calculating the area of the circle
  13.     area = PI * radius * radius;
  14.  
  15.     // Printing the result
  16.     printf("The area of the circle with radius %.2f is: %.2f\n", radius, area);
  17.  
  18.     return 0;
  19. }
Success #stdin #stdout 0.01s 5292KB
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stdin
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Standard input is empty
stdout
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Enter the radius of the circle: The area of the circle with radius 0.00 is: 0.00
https://ideone.com/v1YgaU
language:
C (gcc 8.3)
created:
14 hours ago
visibility:
public

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