c - 创建一个矩阵，其元素作为该元素的索引之和

Question

int main() {
    int n = 0;
    int matrix[n][n];

    printf("Insert the order of the matrix:");
    scanf("%d", &n);
    for (int i = 0; i < n; i++)
        for (int j = 0; j < n; j++)
            matrix[i][j] = i + j;

    printf("The matrix is:\n");
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            printf("%d ", matrix[i][j]);
        }
    } 

对于 2x2 矩阵，输出应该是 0 1 1 2，但它是1 2 1 2，对于 3x3 矩阵，它应该是 0 1 2 1 2 3 2 3 4，但它显示2 3 4 2 3 4 2 3 4

问题是我的输出总是矩阵的第一行，重复 n 次。有什么帮助吗？

标签： cmatrixmultidimensional-array

Answer 1

#include <stdio.h>

int main() {
    int n = 0;
    printf("Insert the order of the matrix:");
    scanf("%d", &n);
    int matrix[n][n];
    for (int i = 0; i < n; i++)
        for (int j = 0; j < n; j++)
            matrix[i][j] = i + j;

    printf("The matrix is:\n");
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            printf("%d ", matrix[i][j]);
        }
    }
}