错误 1 错误 C4700：未初始化的局部变量'rate'并在C++中'hours'

Error 1 error C4700: uninitialized local variable 'rate' and 'hours' in C++

本文关键字：错误 rate 并在 hours C++ 局部变量 C4700 初始化      更新时间：2023-10-16

我是编程初学者。我正在编写一个C++程序，用户会显示他们的工资和工作时间，然后计算工资和工作小时数，然后显示它。我完成了程序，有两个错误我试图修复，但我仍然无法修复。错误和我的代码如下。有人能帮我，告诉我怎么修吗？我正在使用MSVS Express 2013。

错误：

Error   1   error C4700: uninitialized local variable 'hours'
Error   2   error C4700: uninitialized local variable 'rate'

（它在displayWeekly(rate, hours);上出错）

我的代码：

#include "stdafx.h"
#include<iostream>
using namespace std;
void displayWeekly(double rate, int hours);
double getRate();
int getHours();
int main()
{
double rate; 
int hours;
displayWeekly(rate, hours);
double getRate();
int getHours();
rate = getRate();
hours = getHours();
system("pause");
return 0;
}
void displayWeekly(double rate, int hours)
{
double weekPay;
weekPay = rate * hours;
cout << "Weekly pay is " << weekPay << endl;
}
double getRate()
{
double rate;
cout << "Enter your Hourly rate in the Dollars and Cents = ";
cin >> rate;
return rate;
}
int getHours()
{
int time;
cout << "Please Enter in the Hours you worked" << endl;
cout << "You must Enter a whole Number = ";
cin >> time;
return time;
}

您的新main应该是这样的：

int main()
{
    double rate;
    int hours;
    //double getRate(); --> where do you think the return value is stored to?
    //int getHours();   --> 
    rate = getRate();
    hours = getHours();
    displayWeekly(rate, hours);  // --> has to go after you put values to rate & hours
    system("pause");
    return 0;
}

将未初始化的变量传递给displayWeekly，将它们相乘并打印，这将导致错误。相反，在调用getHours和getRate之后再调用该函数，以便对它们进行初始化。

还有

double getRate(); 
int getHours();

在main中是不必要的。拆下它们。

这里您所犯的主要错误是忽略代码的顺序（流）。

int main()
{
double rate; 
int hours;
displayWeekly(rate, hours);//-> this is the func call that lead to error,cozz the arguments rate,hours are not still initialized .You calculated them after the function call.
double getRate();
int getHours();
rate = getRate();
hours = getHours();
                   //->it helps if you call display func here.
system("pause");
return 0;
}
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