递归实现数字转换成字符串

//递归实现数字转换成字符串#include "stdio.h"void exchange(int );int main(){int n;char str[10];scanf("%d",&n);exchange(n);putchar('\n');return 0;}void exchange(int n){int i;if((i=n/10)!=0)exchange(i);putchar(n%10+'0');}