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  1. #include <stdlib.h>
  2.  
  3. long **matrixalloc(size_t d1, size_t d2) {
  4.   size_t i;
  5.  
  6.   long **ret = malloc(d1*sizeof(long*));
  7.   for(i=0; i<d1; ++i) ret[i] = malloc(d2*sizeof(long));
  8.   return ret;
  9. }
  10.  
  11. void matrixfree(long **t, size_t d1) {
  12.   size_t i;
  13.   for(i=0; i<d1; ++i) free(t[i]);
  14.   free(t);
  15. }
  16.  
  17. int main() {
  18.   long **t = matrixalloc(2, 5);
  19.   t[1][3] = 4;
  20.   matrixfree(t, 2);
  21. }
Success #stdin #stdout 0s 2288KB
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https://ideone.com/57d9K7
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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