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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int main(){
  5.     int i, j;
  6.     int a, b;
  7.     int **mat;
  8.  
  9.     scanf("%d %d", &a, &b);
  10.  
  11.     mat = (int **)malloc(a * sizeof(int *));
  12.     for(i = 0; i < a; i++){
  13.         mat[i] = (int *)malloc(b * sizeof(int));
  14.     }
  15.  
  16.     int val = 1;
  17.     for(i = 0; i < a; i++){
  18.         for(j = 0; j < b; j++){
  19.             mat[i][j] = val++;
  20.         }
  21.     }
  22.  
  23.     // 表示（いじらなくてOKな部分）
  24.     for(i = 0; i < a; i++){
  25.         for(j = 0; j < b; j++){
  26.             printf("%d ", mat[i][j]);
  27.         }
  28.         printf("\n");
  29.     }
  30.  
  31.     for(i = 0; i < a; i++){
  32.         free(mat[i]);
  33.     }
  34.     free(mat);
  35.  
  36.     return 0;
  37. }
  38.  
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin 
2 3
stdout 
1 2 3 
4 5 6
https://ideone.com/Oag3qu
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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