#include <stdio.h>
#include <stdlib.h>
 
int main() {
    int i, j;
    int a, b;
    int count = 1;
    int **mat;
 
    scanf("%d %d", &a, &b);
 
    // 2次元配列の動的確保
    mat = (int **)malloc(a * sizeof(int *));
    for (i = 0; i < a; i++) {
        mat[i] = (int *)malloc(b * sizeof(int));
    }
 
    // 2次元配列に数値を代入
    for (i = 0; i < a; i++) {
        for (j = 0; j < b; j++) {
            mat[i][j] = count++;
        }
    }
 
    // 表示
    for (i = 0; i < a; i++) {
        for (j = 0; j < b; j++) {
            printf("%d ", mat[i][j]);
        }
        printf("\n");
    }
 
    // 2次元配列の解放
    for (i = 0; i < a; i++) {
        free(mat[i]);
    }
    free(mat);
 
    return 0;
}

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

MiAz

2 3