如果陈述不起作用?

时间:2013-01-12 02:39:28

标签: c if-statement scanf

我是编程的小伙子。我只是想问下面的代码有什么问题:

scanf("%i", &battlechoice);

printf("BCHOICE WAS:%i\n", battlechoice);

if (battlechoice=4) //fleeing
{
    fleechance=rand() % 100;
    if (fleechance <= 49)
    {
        printf("You attempt to flee...\n");
        sleep(2000);
        printf("Oh dear! You failed to flee! Gamover!\n");
        printf("Thank you for playing! -Anthony\n");
        sleep(7000);
        exit(0);
    } 
    else
    {
        printf("You succeeded in fleeing! You will be returned to town\nshortly...\n\n\n\n\n");
        sleep(3000);
        break;
    }
}        //end fleeing

else if (battlechoice=1) //attacking
{
    //player damage gen
    printf("You commence the attack...\n");
    sleep(750);
    damagemax = rand() % lvl * 1.4;

    damageoutcome = damagemax + damagemin;
}

正在发生的是它正在执行两个if语句,即使它们都有不同的条件?怎么了?提前谢谢。

2 个答案:

答案 0 :(得分:12)

您将赋值运算符=与等号运算符==混淆。写下这个:

if (battlechoice == 4)

等等。

一些C程序员使用“Yoda条件”来避免在这些情况下意外使用赋值:

if (4 == battlechoice)

例如,这将无法编译,捕获错误:

if (4 = battlechoice)

答案 1 :(得分:1)

你正在写作(battlechoice = 4) 用if(battlechoice == 4)

来纠正它

因为'='和'=='运算符都不同

'='是赋值运算符,'=='是比较运算符

查看C http://www.tutorialspoint.com/cplusplus/cpp_operators.htm

中运算符的链接