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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. struct vec_int{
  5. 	int allocate_size;
  6. 	int size; // used size
  7. 	int* val;
  8. };
  9. void valloc(struct vec_int* p_vec, int size){
  10. 	p_vec->allocate_size = size;
  11. 	p_vec->size = size;
  12. 	p_vec->val = (int*)malloc(size*sizeof(int));
  13. 	return p_vec;
  14. }
  15.  
  16. struct vvec_int{
  17. 	int allocate_size;
  18. 	int size; // used size
  19. 	struct vec_int* val;
  20. };
  21. void vvalloc(struct vvec_int* p_vvec, int rows, int cols){
  22. 	p_vvec->allocate_size=rows;
  23. 	p_vvec->size=rows;
  24. 	p_vvec->val = (struct vec_int*)malloc(rows*sizeof(struct vec_int));
  25. 	for(int i=0; i<rows; i++){
  26. 		valloc(&p_vvec->val[i], cols);
  27. 	}
  28. 	return p_vvec;
  29. }
  30.  
  31. void vvprint(const struct vvec_int* p_vvec){
  32. 	for(int p=0; p<p_vvec->size; p++){
  33. 		printf("[ ");
  34. 		for(int q=0; q<p_vvec->val[p].size; q++){
  35. 			printf("%d ", p_vvec->val[p].val[q]);
  36. 		}
  37. 		printf("]\n");
  38. 	}
  39. }
  40.  
  41. int main(){
  42. 	struct vvec_int vvec;
  43. 	vvalloc(&vvec, 3, 3);
  44.  
  45. 	int i=0;
  46. 	for(int p=0; p<vvec.size; p++){
  47. 		for(int q=0; q<vvec.val[p].size; q++){
  48. 			vvec.val[p].val[q] = i++;
  49. 		}
  50. 	}
  51.  
  52. 	vvprint(&vvec);
  53. 	return 0;
  54. }
Success #stdin #stdout 0s 9424KB
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https://ideone.com/HuVeWi
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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