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Vector Operations

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Output:

Vector A:
x: 1.000000
y: 2.000000
z: 3.000000

Vector B:
x: 2.000000
y: 3.000000
z: 4.000000

Adding A and B gives the vector:
x: 3.000000
y: 5.000000
z: 7.000000

Dot product of A and B is 20.000000.

Cross product of A and B gives the vector:
x: -1.000000
y: 2.000000
z: -1.000000

Multiplying A by the scalar quantity 5.0 gives the vector:
x: 5.000000
y: 10.000000
z: 15.000000

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  1. #include <stdio.h>
  2.  
  3. struct vector {
  4. 	float x;
  5. 	float y;
  6. 	float z;
  7. };
  8.  
  9. void printVec(struct vector vec){
  10. 	printf("x: %f\ny: %f\nz: %f\n\n", vec.x, vec.y, vec.z);
  11. }
  12.  
  13. void addVec(struct vector op1, struct vector op2, struct vector *result){
  14. 	result->x = op1.x + op2.x;
  15. 	result->y = op1.y + op2.y;
  16. 	result->z = op1.z + op2.z;
  17. }
  18.  
  19. void initVec(float x, float y, float z, struct vector *vec){
  20. 	vec->x = x; vec->y = y; vec->z = z;
  21. }
  22.  
  23. void multVec(float scalar, struct vector *vec){
  24. 	vec->x *= scalar; vec->y *= scalar; vec->z *= scalar;
  25. }
  26.  
  27. float dotVec(struct vector A, struct vector B){
  28. 	return ((A.x * B.x) + (A.y * B.y) + (A.z * B.z));
  29. }
  30.  
  31. void crossVec(struct vector A, struct vector B, struct vector *C){
  32. 	C->x = ((A.y * B.z) - (A.z * B.y));
  33. 	C->y = ((A.z * B.x) - (A.x * B.z));
  34. 	C->z = ((A.x * B.y) - (A.y * B.x));
  35. }
  36.  
  37. void main(){
  38. 	struct vector A;
  39. 	struct vector B;
  40. 	struct vector C;
  41. 	initVec(1.0, 2.0, 3.0, &A);
  42. 	initVec(2.0, 3.0, 4.0, &B);
  43. 	printf("Vector A:\n");
  44. 	printVec(A);
  45. 	printf("Vector B:\n");
  46. 	printVec(B);
  47. 	printf("Adding A and B gives the vector:\n");
  48. 	addVec(A, B, &C);
  49. 	printVec(C);
  50.         printf("Dot product of A and B is %f.\n\n", dotVec(A, B));
  51. 	printf("Cross product of A and B gives the vector:\n");
  52. 	crossVec(A, B, &C);
  53. 	printVec(C);
  54. 	printf("Multiplying A by the scalar quantity 5.0 gives the vector:\n");
  55. 	multVec(5.0, &A);
  56. 	printVec(A);
  57. }

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