打印出以下图案，用循环控制

#include <stdio.h>
#pragma warning(disable:4996)

int main() {
    int i, j, k;
    for (i = 0; i <= 3; i++) {
        for (j = 0;j <= 2 - i;j++) {
            printf(" ");
        }

        for (k = 0;k <= 2 * i;k++) {
            printf("*");
        }
        printf("\n");
    }

    for (i = 0;i <= 2;i++) {
        for (j = 0; j <= i;j++) {
            printf(" ");
        }

        for (k = 2 * (2 - i) + 1; k > 0 ; k--) {
            printf("*");
        }

        printf("\n");
    }
}

看成输出两个三角型
前面的for 输出前四行
后面的for 输出后三行

#include<stdio.h>

int main () {
  int stars = 1;
  int spaces = 6;

    for (int i = 0; i < 4; j++) {
           for (int j = 0; j < spaces; j++) {
             printf(" ");
            }
      for (int j = 0; j < stars; j++) {
        printf("*");
        if (j != stars - 1) {
          printf(" ");
        }
    }
    stars+=2;
    spaces -= 2;
    }
  spaces = 2;
  stars = 7;
  for (int i = 0; i < 3; i++) {
     for (int j = 0; j < spaces; j++) {
        printf(" ");
      }
      for (int j = 0; j < 4; j++) {
        printf("*");
         if (j != 3) {
            printf(" ");
          }
      }
      spaces += 2;
       stars -= 2;
  }
}