错误提示：“语句无法解析重载函数的地址”

Question

I'm a beginner programmer, so this is going to look messy, but I keep getting the problem that is mentioned in the title. No matter where I try to put endl ; it keeps giving me the same error. Also when I run the code my total for the second store comes out right but the first store total does not. Any idea on how to fix this? I'm using codeblocks on a windows 7 computer.

#include <iostream> //Allows cout/cin
#include <ctime> //Allows time
#include <iomanip> //Allows setprecision

using namespace std;

int main()
{
    //Include header

    //Input variables
    double widgetStores;
    double numberSoldFirst1;
    double numberSoldFirst2;
    double numberSoldSecond1;
    double numberSoldSecond2;
    double widgetsLeftS1W2;
    double widgetsLeftS2W1;
    double widgetsLeftS2W2;

    //Start Clock
    clock_t begin, end;
    double time_spent;
    begin = clock();

    //Prompt for total number in stores

    cout << "Total number of widgets at each store starting with :";
    cin >> widgetStores;

    double widgetStore1=widgetStores;
    double widgetStore2=widgetStores;
    double widgetsLeftS1W1;


    //Prompt for amount sold during first and second week

    cout << "How many widgets were sold at Store 1 the first week? ";
    cin >> numberSoldFirst1;
    cout << "How many widgets were sold at Store 1 the 2nd week? ";
    cin >> numberSoldSecond1;
    cout << "How many widgets were sold at Store 2 the first week? ";
    cin >> numberSoldFirst2;
    cout << "How many widgets were sold at Store 2 the 2nd week? ";
    cin >> numberSoldSecond2;

    //Calculate Number of widgets
    widgetsLeftS1W1-=(widgetStore1-numberSoldFirst1);
    widgetsLeftS1W2-=(numberSoldFirst1-numberSoldSecond1);
    widgetsLeftS2W1-=(widgetStore2-numberSoldFirst2);
    widgetsLeftS2W2-=(numberSoldFirst2-numberSoldSecond2);

    //Display Values
    cout << "Store 1 has " << widgetsLeftS1W2 << " widgets left after the 2nd week.";
    cout << "Store 2 has " <<widgetsLeftS2W2 << " widgets left after the 2nd week.";

    //Show time elapsed
    end = clock();
    time_spent = (double)(end - begin) / CLOCKS_PER_SEC;
    cout << setprecision(2) << fixed << "****Elapsed time:" <<time_spent/60 <<        "minutes****";
    return 0;

Answer 1

Did you try something like

cout << "Total number of widgets at each store starting with :";
cin >> widgetStores;
cout << endl; //Added this

cin doesn't have a << operator, so you need to send it to cout.

Edit: I found the error you're having. I guess that you are trying to put in lines as literally

endl;

and that doesn't go anywhere...

Answer 2

The only compile error this program has, is that you're using widgetsLeftS1W1 , widgetsLeftS1W2 , widgetsLeftS2W1 and widgetsLeftS2W2 before initializing them.

You probably need = instead of -= .

When you say

widgetsLeftS1W1 -= (widgetStore1-numberSoldFirst1);

what you actually mean is

widgetsLeftS1W1 = widgetsLeftS1W1 - (widgetStore1-numberSoldFirst1);

The computer doesn't know the value of widgetsLeftS1W1 , so it gives you the error.

---

Conclusion: use

widgetsLeftS1W1 = (widgetStore1 - numberSoldFirst1); 

Answer 3

Try initializing the values of

widgetsLeftS1W1
widgetsLeftS1W2
widgetsLeftS2W1
widgetsLeftS2W2

with zero while declaring them at the top.