//#include "stdafx.h"//vc++6.0加上这一行.
#include "
stdio.h"
#include "
string.h"
#include "
stdlib.h"
void main(void){
char a[5];
int n;
printf("Enter a positive integer less than 10000:\n");
scanf("%d",&n);
printf("%d is a %d digit number!\n",n,strlen(itoa(n,a,10)));
}