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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int *foo(size_t row, size_t col);
  5.  
  6. int main(void){
  7.     int *arr;
  8.     unsigned int row, col, k;
  9.  
  10.     printf("Give the ROW: ");
  11.     if ( scanf("%u",&row) != 1){
  12.         printf("Error, scanf ROW\n");
  13.         exit(1);
  14.     }
  15.  
  16.     printf("Give the COL: ");
  17.     if ( scanf("%u",&col) != 1){
  18.         printf("Error, scanf COL\n");
  19.         exit(2);
  20.     }
  21.  
  22.     arr = foo(row, col);
  23.     for (k = 0 ; k < (row * col) ; k++){
  24.         printf("%d ",arr[k]);
  25.     }
  26.  
  27.     free(arr);
  28. }
  29.  
  30. int *foo(size_t row, size_t col){
  31.     unsigned int i, j;
  32.     int *arr = malloc(sizeof *arr * row * col);
  33.     int l = 0;
  34.  
  35.     if(arr == NULL){
  36.         printf("Error, malloc\n");
  37.         exit(3);
  38.     }
  39.  
  40.     for ( i = 0; i < row ; i++){
  41.         for ( j = 0 ; j < col ; j++){
  42.             arr[i * col + j] = l;
  43.             l++;
  44.         }
  45.     }
  46.  
  47.     return arr;
  48. }
Success #stdin #stdout 0s 2296KB
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Give the ROW: Give the COL: 0 1 2 3 4 5 6 7 8 9
https://ideone.com/Fe4zEm
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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