#include<stdio.h>
#include<math.h>
void main()
{
    int a,b,c,d=1,f=1;
    printf("input a number a\n");
    scanf("%d",&a);
    if(a==1)
        for(b=1;b<6;b++);
        {
            printf("\n");
                for(c=1;c<=b;c++);
            {
            printf("弟弟");
            }
        }
         if(a==2)
        {
            while(d<4)
            {
                d++;
            }
            printf("\n");
            if(d=3)
            {
                continue;
            }
            while(f<=d)
            {
                f++;
            }
            printf("是个智障孩子");

        }
}
本来想出来类似
*
**
***
****
*****
******这样的形式可以连弟弟都不出来？？/