UVa 272 Tex Quotes

//#include <iostream>
//#include <iomanip>
#include <cstdio>
#include <cmath>
using namespace std;

int main() {
//ios::sync_with_stdio(false);
//FILE *f = fopen("in.txt", "r");

char c;
int begin = 0;
while((c = getchar()) != EOF) {
if(c == '"') {
if(!begin) {
printf("``");
begin = 1;
} else {
printf("''");
begin = 0;
}
} else {
printf("%c", c);
}
}

//fclose(f);
return 0;
}