输入输出外挂

#include<iostream>#include<stdio.h>using namespace std;int Scanf(){    int sign=0,res=0;    char ch;    if((ch=getchar())=='-')sign=1;    else if(ch>='0'&&ch<='9')        res=ch-'0';    while((ch=getchar())>='0'&&ch<='9')           res=res*10+ch-'0';    return sign?-res:res;}void Out(int a){    if(a<0)    {        putchar('-');a=-a;    }    if(a>9)Out(a/10);    putchar(a%10+'0');}int main(){    int  n;    while(~(n=Scanf()))    {      Out(n);      printf("\n");    }    return 0;}