#include<stdio.h>
int main()
{
int a=4;
//scanf("%d",&a);
int i,j,k;
i=a;
int cnt=0;
while(i<=a+3);
{
    j=a;
    while(j<=a+3)
    {
    k=a;
     while(k<=a+3)
        {
        if(i!=j)
        {
            if(i!=k)
            {
                if(j!=k)
                {
                    cnt++;
                    printf("%d%d%d",i,j,k);
                    if(cnt==6)
                    {
                        printf("\n");
                        cnt=0;
                    }
                    else{printf("");
                    }
                }
            }
        }
        k++;
        }
        j++;   
    }
    i++;
}
return 0;
}

我想输出4567中的任意三个字符的排序组合，但我用DEVc++可以编译但是却无法显示

我自己搞出来了，新手低级错误，这是不是do while但我却在后加了分号