ACM 272 -- TEX Quotes

#include <stdio.h>
#include <ctype.h>


int main()
{
    char temp;
    int pair = 0;
    while((temp=getchar())!=EOF){
        if(temp == '"'){
            if(pair == 0){
                pair++;
                printf("``");
            }else{
                pair = 0;
                printf("''");
            }
        }else{
            putchar(temp);
        }
    }
    return 0;
}