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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. #define PI 3.14159265
  5.  
  6. void rotatePoint(float *x, float *y, float angle) {
  7.     // Convert angle from degrees to radians
  8.     float rad = angle * (PI / 180.0);
  9.  
  10.     // Rotation matrix
  11.     float x_new = *x * cos(rad) - *y * sin(rad);
  12.     float y_new = *x * sin(rad) + *y * cos(rad);
  13.  
  14.     *x = x_new;
  15.     *y = y_new;
  16. }
  17.  
  18. int main() {
  19.     float x, y, angle;
  20.  
  21.     // Input original point coordinates
  22.     printf("Enter the x coordinate of the point: ");
  23.     scanf("%f", &x);
  24.     printf("Enter the y coordinate of the point: ");
  25.     scanf("%f", &y);
  26.  
  27.     // Input rotation angle
  28.     printf("Enter the rotation angle (in degrees): ");
  29.     scanf("%f", &angle);
  30.  
  31.     // Rotate the point
  32.     rotatePoint(&x, &y, angle);
  33.  
  34.     // Display the new coordinates
  35.     printf("New coordinates after rotation: (%.2f, %.2f)\n", x, y);
  36.  
  37.     return 0;
  38. }
Success #stdin #stdout 0s 5284KB
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stdin
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Standard input is empty
stdout
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Enter the x coordinate of the point: Enter the y coordinate of the point: Enter the rotation angle (in degrees): New coordinates after rotation: (0.00, 0.00)
https://ideone.com/wbYndB
language:
C99 (gcc 8.3)
created:
4 days ago
visibility:
public

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