從程序中輸出錯誤。編譯沒有錯誤

Question

here is my header file: 
#ifndef weeklyEmp_h 
#define weeklyEmp_h 


// SPECIFICATION FILE weeklyEmp.h 
// 
//---------------------------------------------------------------------- 
#include <string> 
using namespace std; 

class weeklyEmp{ 
public: 
//constructors 
weeklyEmp(); 

weeklyEmp (string initName, 
    double initHours, 
    double initRate, 
    int initExemptions, 
    string initFilingStatus); 

//--modifiers 
void set_hours(double thisWeeksHours); 
//post: Set the hours worked for a given week 

void set_rate(double thisWeeksRate); 
//post: Change the employee's hourly rate of pay 

//--accessors 
double grosPay() const; 
//post: Return gross pay with overtime 

double incomeTax() const; 
//post: Return the federal income tax 

double FICATax() const; 
//post: Return the social security tax 

string name() const; 
//post: Return the employee's name 

private: 
    string my_name; 
    double my_hours; 
    double my_rate; 
    int my_exemptions; 
    string my_filingStatus; 


    }; 

#endif //weeklyEmp_h 

這裏是一個包含.cpp文件：

#include <iostream> 
#include <string> 
#include "weeklyEmp.h" 

using namespace std; 

const double WEEKLY_ALLOWANCE = 39.42; 
const double FICA_TAX_RATE = 0.0765; 
weeklyEmp::weeklyEmp() 
{ 
my_name = "?name?"; 
my_hours = 0.0; 
my_rate = 0.0; 
my_exemptions; 0; 
my_filingStatus = "?filingStatus?"; 
} 
weeklyEmp::weeklyEmp(string initName, 
    double initHours, 
    double initRate, 
    int initExemptions, 
    string initFilingStatus) 
{ 
    my_name; initName; 
    my_hours; initHours; 
    my_rate; initRate; 
    my_exemptions; initExemptions; 
    my_filingStatus; initFilingStatus; 
} 

//--modifiers 

void weeklyEmp::set_hours(double thisWeeksHours) 
    //post: Set the hours worked for a given week 
{ 
    my_hours = thisWeeksHours; 
} 



void weeklyEmp::set_rate(double thisWeeksRate) 
//post: Change the employee's hourly rate of pay 
{ 
my_rate = thisWeeksRate; 
} 

//--accessors 
double weeklyEmp::grosPay() const 
//post: Return gross pay with overtime 

{if(my_hours <=40) return my_hours * my_rate; 
else 
return (40*my_rate) + (my_hours-40) * 1.5 * my_rate; 
} 

double weeklyEmp::incomeTax() const 
//post: Return the federal income tax 
{ 
double result(0.0); 
double taxableIncome(grosPay() - my_exemptions * WEEKLY_ALLOWANCE); 
if(my_filingStatus == "S" || my_filingStatus == "s") 
{ 
if (taxableIncome <= 23.00) 
result = 0.00; 
else if(taxableIncome <= 397.00) 
result = 0.15 * (taxableIncome - 23.00); 
else if(taxableIncome <= 928.00) 
result = 56.10 + 0.28 * (taxableIncome - 397.00); 
else if(taxableIncome <= 2121.00) 
result = 204.78 + 0.33 * (taxableIncome - 928.00); 
else 
result = 598.47 + 0.28 * (taxableIncome - 2121.00); 
} 
if(my_filingStatus == "M" || my_filingStatus == "m") 
{ 
if(taxableIncome <= 65.00) 
result = 0.00; 
else if(taxableIncome <= 689.00) 
result = 0.15 * (taxableIncome - 65.00); 
else if(taxableIncome <= 1573.00) 
result = 93.60 + 0.28 * (taxableIncome - 689.00); 
else if(taxableIncome <= 3858.00) 
result = 341.12 + 0.33 * (taxableIncome - 1573.00); 
else 
result = 1095.17 + 0.28 * (taxableIncome - 3858.00); 
} 
/* round to the nearest penny */ 
/* include compfun.cpp for round function */ 
result = (result, 2); 
return result; 

} 

double weeklyEmp::FICATax() const 
//post: Return the social security tax 
{ 
    return grosPay() * FICA_TAX_RATE; 
} 

string weeklyEmp::name() const 
//post: Return the employee's name 

{ 
return my_name; 

} 

最後主CPP文件：

#include <iostream> 
#include <string> 
#include "weeklyEmp.h" 
#include "COMPFUN.H" 

using namespace std; 


int main() 
{ 
    string name; 
    double rate; 
    double hours; 
    int exemptions; 
    string filingStatus; 




    cout <<"Name: "; 
    cin >> name; 
    cout << "Hourly Rate:"; 
    cin >> rate; 
    cout << "Hours Worked:"; 
    cin >> hours; 
    cout << "Exemptions: "; 
    cin >> exemptions; 
    cout<< "S) ingle/M) arried: "; 
    cin >> filingStatus; 
    cout << endl; 


weeklyEmp emp(name, hours, rate, exemptions, filingStatus); 
double net = emp.grosPay() - emp.incomeTax() - emp.FICATax(); 




cout << "Employee: " << name << endl; 
cout << "Gross Income FICA Net" << endl; 
decimals(cout, 2); 
cout << emp.grosPay() << emp.incomeTax() <<emp.FICATax() <<net << endl; 

cout.width(9); cout << emp.grosPay(); 
cout.width(13); cout << emp.incomeTax() << endl; 





system("pause"); 
    return 0; 
} 

這是垃圾輸出我收到。我認爲錯誤是在.cpp文件中（不是主要的，但包括在內）。我無法找到它。

姓名：Mark 每小時收費：10 工作小時數：10項 豁免：1個 S）英格爾/ M）arried：S

員工：馬克 總收入FICA淨 00000000000000000000000000000000000000000000.002.0065539732969740393000000000000 00000000000000.00791188802582421710000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000.00 按任意鍵繼續。 。 。

Answer 1

我敢肯定你的問題是這樣的構造：

weeklyEmp::weeklyEmp(string initName, 
    double initHours, 
    double initRate, 
    int initExemptions, 
    string initFilingStatus) 
{ 
    my_name; initName; 
    my_hours; initHours; 
    my_rate; initRate; 
    my_exemptions; initExemptions; 
    my_filingStatus; initFilingStatus; 
} 

它看起來就像你在的地方=有;而且由於他們沒有被初始化，那麼這些成員將有不確定的值。如果你有警告，應該指出這些行。在gcc編譯-W -Wall -pedantic給這些行的警告：

warning: statement has no effect [-Wunused-value]