for循环给出警告：表达式结果未使用[-Wunused-value]

I've been staring at this for ages and can't figure out why it's giving me a warning at the for-loop statement.

我多年来一直盯着这个，无法弄清楚为什么它会在for-loop语句中给我一个警告。

//looks for a certain account by name in the provided list, return index 
//of account if found, else -1

int AccountSearch(BankArray bank, char name[100])
{
    int i = 0;
    for(i ; i < maxAccounts ; i++)
    {
        /* if this index contains the given value, return the index */
        if (strcmp(bank->list[i]->accountName, name) == 0)
        { 
            return i;
        }
    }

    /* if we went through the entire list and didn't find the 
     * value, then return -1 signifying that the value wasn't found
     */
    return -1;

}

1 个解决方案

#1

The first expression in your for loop is not used and it's equivalent to writing

你的for循环中的第一个表达式没有被使用，它等同于写作

i;

change it to

改为

for (; i < maxAccounts ; ++i)

or better, since it's only executed the very first time the loop is found, use it to initialize and declare i, like this

或者更好，因为它只在第一次找到循环时执行，用它来初始化并声明我，就像这样

for (int i = 0 ; i < maxAccounts ; ++i)

#1