蓝桥杯历届试题-回文数字-题解(C语言代码)

堪称无脑[手动滑稽]

#include<stdio.h>
int main()
{
    int a,b,c,d; //a为录入数字
    int flag=1;  
    scanf("%d",&a);
    for(b=10000;b<1000000;b++)
    {
        if(b<100000)
        {
            c=b/10000+(b/1000-10*(b/10000))+(b/100-10*(b/1000))+(b/10-10*(b/100))+(b-10*(b/10));
            if(c==a&&b/10000==(b-10*(b/10))&&(b/1000-10*(b/10000))==(b/10-10*(b/100)))
            {
                flag=0;
                printf("%d\n",b);
            }
        }
        else
        {
            d=b/100000+b/10000-10*(b/100000)+b/1000-10*(b/10000)+b/100-10*(b/1000)+b/10-10*(b/100)+b-10*(b/10);
            if(d==a&&b/100000==b-10*(b/10)&&b/10000-10*(b/100000)==b/10-10*(b/100)&&b/1000-10*(b/10000)==b/100-10*(b/1000))
            {
                flag=0;
                printf("%d\n",b);
            }
        }
    } 
    if(flag==1)
    {
        printf("-1\n");
    }
    return 0;
}