Program Eror!
I have this error in visual studio, and i dont know what does mean
Link for picture for the error
https://ibb.co/FswnRmj
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#include <ostream>
#include <string>
#include <istream>
class Stock {
int code;
std::string name;
double valuePerUnit;
int noUnits;
public:
Stock();
Stock(int c, std::string n, double v, int nu);
void setCode(int c);
void setName(std::string n);
void setValuePerUnit(double v);
void setNoUnits(int n);
int getCode();
std::string getName();
double getValuePerUnit();
double getNoUnits();
double calcAmount();
friend std::ostream & operator<<(std::ostream &out, const Stock &s);
friend std::istream &operator>>(std::istream &in, Stock& s);
};
#include "Stock.h"
#include <iostream>
Stock::Stock() {
code = 0;
name = "";
valuePerUnit = 1;
noUnits = 1;
}
Stock::Stock(int c, std::string n, double v, int nu)
{
code = c;
name = n;
valuePerUnit = v;
noUnits = nu;
}
void Stock::setCode(int c)
{
code = c;
}
void Stock::setName(std::string n)
{
name = n;
}
void Stock::setValuePerUnit(double v)
{
valuePerUnit = v;
}
void Stock::setNoUnits(int n)
{
noUnits = n;
}
int Stock::getCode()
{
return code;
}
std::string Stock::getName()
{
return name;
}
double Stock::getValuePerUnit()
{
return valuePerUnit;;
}
double Stock::getNoUnits()
{
return noUnits;;
}
double Stock::calcAmount()
{
return getNoUnits() * getValuePerUnit();
}
std::ostream& operator << (std::ostream &out, Stock &s)
{
out << "\nCode : " << s.getCode();
out << "\nName : " << s.getName();
out << "\nNumber Of Units : " << s.getNoUnits();
out << "\nCost of Unit : " << s.getValuePerUnit();
out << "\nTotal : " << s.calcAmount() << std::endl;
return out;
}
std::istream& operator >> (std::istream& in, Stock& s)
{
std::cout<<"Enter Stock Code ";
in>>s.code;
std::cout<<"Enter Stock Name ";
in>>s.name;
std::cout<<"Enter value per Unit : ";
in>>s.valuePerUnit;
std::cout<<"Enter Number of Units : ";
in>>s.noUnits;
return in;
}
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Last edited on
This is your friend declaration:
friend std::ostream & operator<<(std::ostream &out, const Stock &s);
This is your implementation of said function:
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std::ostream& operator << (std::ostream &out, Stock &s)
{
...
}
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Notice, your implementation's function signature is not const-correct, but your declaration is (const Stock &s vs. Stock &s).
Every member function that does not modify data should have a const qualifier on it.
So, for example, it should be
int getCode() const;
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int Stock::getCode() const
{
return code;
}
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Do this for all your get* functions, and calcAmount.
Last edited on
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