题解 | #菱形图案#

#include <stdio.h>
int main() {
    int i = 0, j = 0, m = 0, n = 0;
    while (scanf("%d", &n) != EOF) {
        //上层
        for (i = 0; i < n; i++) {
            for (j = 0; j < n - i; j++) {
                printf(" ");
            }
            for (m = 0; m < i + 1; m++) {
                printf("* ");
            }
            printf("\n");
        }
        //下层
        for (i = 0; i < n + 1; i++) {
            for (j = 0; j < i ; j++) {
                printf(" ");
            }
            for (m = 0; m < n + 1 - i; m++) {
                printf("* ");
            }
            printf("\n");
        }
    }
    return 0;
}