题解 | X形图案

#include <stdio.h>

int main() {
    int n;
    while (scanf("%d",&n) != EOF) {
        for(int i = 1;i <= n;++i){
            for(int j = 1;j <= n;++j){
                if(j==i){
                    printf("*");
                }else if(j==n-i+1){
                printf("*");
                }else {
                printf(" ");
                }
            }
            printf("\n");
        }
    }
    return 0;
}