删除第//11行，第//14结果变了。

#include <stdio.h>//1

int main()//2

{//3

    double money =12      ;//4 

    double cost =11.5       ;//5  

    printf("小编能不能打车回家呢：");//6 

    printf("%c\n",money>=cost?'y':'n');//7

    printf("%c\n",(money>=cost)?'y':'n');//8

    //9

    printf("%c\n",(money>cost)||(money=cost)?'y':'n');//10

    printf("%c\n",(money=cost)||(money>cost)?'y':'n');//11

    printf("%c\n",((money>cost)||(money=cost))?'y':'n');//12

    //13

    printf("%c\n",(money>cost)&&(money=cost)?'y':'n');//14

    printf("%c\n",(money=cost)&&(money>cost)?'y':'n');//15

    printf("%c\n",((money>cost)&&(money=cost))?'y':'n');//16

    //17

    return 0;//18

}//19