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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. // Utility function to find minimum of two integers
  5. int min(int x, int y) { return (x < y)? x: y; }
  6.  
  7. int calcAngle(double h, double m)
  8. {
  9.     // validate the input
  10.     if (h <0 || m < 0 || h >12 || m > 60)
  11.         printf("Wrong input");
  12.  
  13.     if (h == 12) h = 0;
  14.     if (m == 60) m = 0;
  15.  
  16.     // Calculate the angles moved by hour and minute hands
  17.     // with reference to 12:00
  18.     int hour_angle = 0.5 * (h*60 + m);
  19.     int minute_angle = 6*m;
  20.  
  21.     // Find the difference between two angles
  22.     int angle = abs(hour_angle - minute_angle);
  23.  
  24.     // Return the smaller angle of two possible angles
  25.     angle = min(360-angle, angle);
  26.  
  27.     return angle;
  28. }
  29.  
  30. // Driver program to test above function
  31. int main()
  32. {
  33.     printf("%d \n", calcAngle(1, 2));
  34.     printf("%d \n", calcAngle(3, 30));
  35.     return 0;
  36. }
Success #stdin #stdout 0s 2156KB
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https://ideone.com/LqGRZ7
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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