UVA272 TEX Quotes

UVA 272

#include<cstdio>
#include<iostream>
#include<cstring>
using namespace std;

char str;

int main()
{
bool f = true;

while((str = getchar())!=EOF)
{
if(str == '"')
{
printf("%s",f ? "``" : "''");
f=!f;
}
else
putchar(str);
}
return 0;
}