C语言问题求哥哥姐姐们解答

Question

Answer 1

代码如下:

 #include <stdio.h>

void main(void)
{
    int two1,two2,three1,three2,four1,four2,four3,one,two,three,four;
    for(one=2;one<9;one++)
    {
        for(two1=2;two1<9;two1++)
        {
            if(one==two1)
                continue;
            for(two2=0;two2<9;two2++)
            {
                if(one==two2||two1==two2)
                    continue;
                two=two1*10+two2;
                for(three1=0;three1<9;three1++)
                {
                    if(one==three1||two1==three1||two2==three1)
                    continue;
                    for(three2=0;three2<9;three2++)
                    {
                        if(one==three2||two1==three2||two2==three2||three1==three2)
                            continue;
                        three=900+three1*10+three2;
                        for(four1=0;four1<9;four1++)
                        {
                            if(one==four1||two1==four1||two2==four1||three1==four1||three2==four1)
                                continue;
                            for(four2=0;four2<9;four2++)
                            {
                                if(one==four2||two1==four2||two2==four2||three1==four2||three2==four2||four1==four2)
                                    continue;
                                for(four3=0;four3<9;four3++)
                                {
                                    if(one==four3||two1==four3||two2==four3||three1==four3||three2==four3||four1==four3||four2==four3)
                                        continue;
                                    four=1000+100*four1+10*four2+four3;
                                    if(one+two+three==four)
                                        printf("one:%d,two:%d,three:%d,four:%d\n",one,two,three,four);
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}