#include <stdio.h>
#include <stdlib.h>
//接受一个整型值（无符号）按照顺序打印它的每一位
//1234 打印1 2 3 4
void PrintNum(unsigned int num){
if (num > 9){
PrintNum(num / 10);
}
printf(" %d", num % 10);
}
int main()
{
PrintNum(1234);
system("pause");
return 0;
}
原文：https://www.cnblogs.com/Leafbud/p/12574592.html