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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. typedef struct _vector_2d {
  5.     float x, y;
  6. } vector2;
  7.  
  8. int main() {
  9.     vector2 a = { 2, 3 };
  10.     vector2 b = { 4, 5 };
  11.  
  12.     printf("Vector A: (%.2f, %.2f)\n", a.x, a.y);
  13.     printf("Vector B: (%.2f, %.2f)\n", b.x, b.y);
  14.     printf("CosΘ: %.2f\n", (a.x*b.x+a.y*b.y)/(sqrt(a.x*a.x+a.y+a.y)*sqrt(b.x*b.x+b.y*b.y)));
  15. }
Runtime error #stdin #stdout 0s 1788KB
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stdin
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Standard input is empty
stdout
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Vector A: (2.00, 3.00)
Vector B: (4.00, 5.00)
CosΘ: 1.14
https://ideone.com/HcHp8o
language:
C (gcc 8.3)
created:
13 years ago
visibility:
secret

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