在Tex中，左引号是''，右引号是“

#include<stdio.h>#include<string.h>int main(){char word[100];int i, q = 1;scanf("%s", word);int len = strlen(word);for(i = 0; i < len ; i++){if(word[i] == '"'){printf("%s", q ? "''": "\"");q = !q;}else{printf("%c", word[i]);}}printf("\n");return 0;}