题解 | #数字颠倒#

#include <stdio.h>
#include <malloc.h>
#include<string.h>
int main() {
    long int n;
    scanf("%ld",&n);
    char ret[1000];
    sprintf(ret, "%d", n);//将整形转为字符串
    int len=strlen(ret);
    int high=len-1;
    int low=0;
    while(high>low)//交换他们的位置
    {
        char flag=ret[low];
        ret[low]=ret[high];
        ret[high]=flag;
        low++;
        high--;

    }
    printf("%s",ret);
}