UVa 272 TEX Quotes

#include<stdio.h>
int main(void)
{
	//freopen("input.txt","r",stdin);
	int c, q = 1;
	while((c = getchar()) != EOF) {
		if(c == '"') {
			printf("%s", q ? "``" : "''");
			q = !q;
		}else{
			printf("%c", c);
		}
	}
	return 0;
}