嵌套for循环的if-else块 - 编译器要求我需要一个return语句 [英] If-else block in nested for loops - Compiler claims I need a return statement

问题描述

我如何使这项工作？它说，我需要添加一个return语句，但我有一个。

 公共布尔clockFactCheck（INT A，INT B）{
    的for（int i = 0; I＆LT; = 276;我++）{
        对于（INT H = 0; H＆LT; = 55; H ++）{
            如果（一个== I + 186放大器;和b == H + 133）{
                返回true;
            }其他{
                返回false;
            }
        }
    }
}
 

解决方案

提供可能达不到回报之一的code S表示任何输入 A，b 这就是编译器抱怨。

其实你的情况的if-else 将与第一个迭代达到了 - 可惜东西编译器无法推断。因此，这是不言而喻的保存方式发出此错误。

的注释：的。因此，在你的循环似乎没有太大的意义，因为它不会重复，不过在第一次迭代内停止我== 0 和 ^ h == 0 。难道你的意思是code类似的东西？

How do I make this work? It says that I need to add a return statement but I have one.

public boolean clockFactCheck(int a, int b){
    for (int i = 0; i <= 276; i++){
        for (int h = 0; h <= 55; h++){
            if (a == i + 186 && b == h + 133){
                return true;
            } else {
                return false;
            }
        }
    }
}

解决方案

The code provided may not reach one of the returns for any input a,b and that's what the compiler is complaining about.

Actually in your case the if-else will be reached with the very first iteration - unfortunately something which the compiler cannot deduce. Therefore, it goes the save way and issues this error.

Comment: Therefore, in your loop seems not to make much sense since it will not iterate at all but stop within the first iteration i==0 and h==0. Did you meant to code something like that?

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