#include <stdio.h>
void splnum(int n)
{
    char num;
    if (n == 0) 
        return;
    splnum(n / 10);
    num = n % 10+ '0'; //将数字转化为字符
    putchar(num);

}

int main()
{
    int nub;
    printf("请输入一个整数：\n");
    scanf_s("%d", &nub);
    splnum(nub);
    return 0;
}