计算整数的位数

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int n=0;

    while ( EOF != scanf("%d", &n) )
    {
        int reverseNum =0;
        int temp = n;
        int count = 0;
        while (0 != temp)
        {
            reverseNum = reverseNum * 10 + temp%10;
            temp /= 10;
            count++;
        }
        printf("%d %d\n", count, reverseNum);

    }

    return 0;
}

原文：http://blog.csdn.net/xiaohanstu/article/details/42293677