题解 | #添加逗号#
添加逗号
https://www.nowcoder.com/practice/f51c317e745649c0900996fd3f683aed
#include <stdio.h>
int count = 0;
void Fun(int n)
{
if (n > 10)
{
count++;
Fun(n / 10);
}
if (count % 3 == 0&&count!=0)
{
printf("%d", n % 10);
printf(",");
count--;
}
else
{
printf("%d", n % 10);
count--;
}
}
int main()
{
int n;
scanf("%d", &n);
Fun(n);
return 0;
}
#利用递归写的#