2017.10.31

Have you ever gone shopping and

e


程序来自网上，侵权即删。

#include <iostream>
#include <stdio.h>
#include <math.h>
#include <iomanip> //不能写成#include <iomanip.h>
#include <string.h>

using namespace std;

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
#include<stdio.h>
#include<string.h>

int main()
{
char c;
int a[300]={0};
while((c=getchar()) != EOF)
{
if((c >= ‘a‘ && c <= ‘z‘) || (c >= ‘A‘ && c <= ‘Z‘))
{
a[c]++;

if(a[c] == 3)
{
printf("%c",c);
break;
}

}
}
return 0;
}