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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int main(){
  5.     int i,j,k;
  6.     int a,b;
  7.     int **mat;
  8.     scanf("%d %d",&a,&b);
  9.  
  10. mat = (int*)malloc(sizeof(int)*a);
  11. if(mat==NULL){
  12. printf("error\n");
  13. return 0;
  14. }
  15.  
  16. for(i=0; i<a; i++){
  17. mat[i]=(int*)malloc(sizeof(int)*b);
  18. if(mat[i]==NULL){
  19. printf("error\n");
  20. return 0;
  21. }
  22. }
  23.  
  24. k=1;
  25. for(i=0;i<a;i++){
  26. for(j=0;j<b;j++){
  27. mat[i][j]=k++;
  28. }
  29. }
  30.  
  31.     for(i=0;i<a;i++){
  32.         for(j=0;j<b;j++){
  33.             printf("%d ",mat[i][j]);
  34.         }
  35.         printf("\n");
  36.     }
  37.  
  38. for(i=0;i<a;i++){
  39. free(mat[i]);
  40. }
  41. free(mat);
  42.     return 0;
  43. }
  44.  
Success #stdin #stdout 0s 5316KB
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https://ideone.com/IVHk5L
language:
C (gcc 8.3)
created:
13 days ago
visibility:
public

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