TeX中的引号

在Tex中，做双引号的"``",右双引号是"‘‘" 。输入一篇包含双引号的文章，你的任务是把它转换成TeX的格式。
样例输入："To be or not to be,"quoth the Bard,"that is the question".
样例输出：
        ``To be or not to be‘‘quoth the Bard,``that is the question‘‘.

#include <iostream>
#include <stdio.h>

using namespace std;

int main()
{
    int c, q = 1;
    while((c = getchar()) != EOF)
    {
        if (c == ‘"‘)
        {
            printf("%s", q?"``" : "‘‘");
            q = !q;
        }
        else
        {
            cout<<char(c);
        }
    }

    return 0;
}