error: no match for ‘operator<<’ (operand types are ‘std::ostream {aka std::basic

error: no match for ‘operator<<’ (operand types are ‘std::ostream {aka std::basic_ostream}’ and...

up vote
-4
down vote

favorite

This is my code (I write the essence only) and I get this:

error: no match for ‘operator<<’ (operand types are ‘std::ostream {aka std::basic_ostream}’ and ‘void’)

class Mobil {

public:

void print() const; 

int  getNumber() const;

double getData() const;

friend ostream& operator <<(ostream&, const Mobil&);

};



ostream& operator<<(ostream& out, const Mobil& mobil) {

    out << mobil.print() << endl;

    return out;

}

what is the problem?

asked Nov 9 at 10:58

P. Mark

2

Problem is this line: out << mobil.print() << endl;. Your print() method doesn't return anything (is type of void), so it can't be send to ostream
– Rhathin
Nov 9 at 11:06

1

@Rhathin that sounds like a perfect answer to me.
– darune
Nov 9 at 11:13

1

@Rhathin Don't answer in the comments section, thanks.
– Lightness Races in Orbit
Nov 9 at 11:13

add a comment |

up vote
-4
down vote

favorite

This is my code (I write the essence only) and I get this:

error: no match for ‘operator<<’ (operand types are ‘std::ostream {aka std::basic_ostream}’ and ‘void’)

class Mobil {

public:

void print() const; 

int  getNumber() const;

double getData() const;

friend ostream& operator <<(ostream&, const Mobil&);

};



ostream& operator<<(ostream& out, const Mobil& mobil) {

    out << mobil.print() << endl;

    return out;

}

what is the problem?

asked Nov 9 at 10:58

P. Mark

2

Problem is this line: out << mobil.print() << endl;. Your print() method doesn't return anything (is type of void), so it can't be send to ostream
– Rhathin
Nov 9 at 11:06

1

@Rhathin that sounds like a perfect answer to me.
– darune
Nov 9 at 11:13

1

@Rhathin Don't answer in the comments section, thanks.
– Lightness Races in Orbit
Nov 9 at 11:13

add a comment |

up vote
-4
down vote

favorite

This is my code (I write the essence only) and I get this:

error: no match for ‘operator<<’ (operand types are ‘std::ostream {aka std::basic_ostream}’ and ‘void’)

class Mobil {

public:

void print() const; 

int  getNumber() const;

double getData() const;

friend ostream& operator <<(ostream&, const Mobil&);

};



ostream& operator<<(ostream& out, const Mobil& mobil) {

    out << mobil.print() << endl;

    return out;

}

what is the problem?

asked Nov 9 at 10:58

P. Mark

This is my code (I write the essence only) and I get this:

error: no match for ‘operator<<’ (operand types are ‘std::ostream {aka std::basic_ostream}’ and ‘void’)

class Mobil {

public:

void print() const; 

int  getNumber() const;

double getData() const;

friend ostream& operator <<(ostream&, const Mobil&);

};



ostream& operator<<(ostream& out, const Mobil& mobil) {

    out << mobil.print() << endl;

    return out;

}

what is the problem?

c++ c++11

asked Nov 9 at 10:58

P. Mark

asked Nov 9 at 10:58

P. Mark

asked Nov 9 at 10:58

P. Mark

asked Nov 9 at 10:58

P. Mark

asked Nov 9 at 10:58

P. Mark

2

Problem is this line: out << mobil.print() << endl;. Your print() method doesn't return anything (is type of void), so it can't be send to ostream
– Rhathin
Nov 9 at 11:06

1

@Rhathin that sounds like a perfect answer to me.
– darune
Nov 9 at 11:13

1

@Rhathin Don't answer in the comments section, thanks.
– Lightness Races in Orbit
Nov 9 at 11:13

add a comment |

2

Problem is this line: out << mobil.print() << endl;. Your print() method doesn't return anything (is type of void), so it can't be send to ostream
– Rhathin
Nov 9 at 11:06

1

@Rhathin that sounds like a perfect answer to me.
– darune
Nov 9 at 11:13

1

@Rhathin Don't answer in the comments section, thanks.
– Lightness Races in Orbit
Nov 9 at 11:13

Problem is this line: out << mobil.print() << endl;. Your print() method doesn't return anything (is type of void), so it can't be send to ostream
– Rhathin
Nov 9 at 11:06

@Rhathin that sounds like a perfect answer to me.
– darune
Nov 9 at 11:13

@Rhathin Don't answer in the comments section, thanks.
– Lightness Races in Orbit
Nov 9 at 11:13

add a comment |

1 Answer
1

active

oldest

votes

up vote
1
down vote

accepted

Problem is this line: out << mobil.print() << endl;. Your print() method doesn't return anything (is type of void), so it can't be send to ostream.

To solve this problem, your print() method should return whatever you want to printout in one of types supported by ostream which you can find in reference.

answered Nov 9 at 11:16

Rhathin

5391313

1

Or it can take std::ostream& and do whatever it needs to on behalf of the operator<<, though this is arguably less idiomatic nowadays.
– Lightness Races in Orbit
Nov 9 at 11:18

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
1
down vote

accepted

Problem is this line: out << mobil.print() << endl;. Your print() method doesn't return anything (is type of void), so it can't be send to ostream.

To solve this problem, your print() method should return whatever you want to printout in one of types supported by ostream which you can find in reference.

answered Nov 9 at 11:16

Rhathin

5391313

1

Or it can take std::ostream& and do whatever it needs to on behalf of the operator<<, though this is arguably less idiomatic nowadays.
– Lightness Races in Orbit
Nov 9 at 11:18

add a comment |

up vote
1
down vote

accepted

Problem is this line: out << mobil.print() << endl;. Your print() method doesn't return anything (is type of void), so it can't be send to ostream.

To solve this problem, your print() method should return whatever you want to printout in one of types supported by ostream which you can find in reference.

answered Nov 9 at 11:16

Rhathin

5391313

1

Or it can take std::ostream& and do whatever it needs to on behalf of the operator<<, though this is arguably less idiomatic nowadays.
– Lightness Races in Orbit
Nov 9 at 11:18

add a comment |

up vote
1
down vote

accepted

Problem is this line: out << mobil.print() << endl;. Your print() method doesn't return anything (is type of void), so it can't be send to ostream.

To solve this problem, your print() method should return whatever you want to printout in one of types supported by ostream which you can find in reference.

answered Nov 9 at 11:16

Rhathin

5391313

Problem is this line: out << mobil.print() << endl;. Your print() method doesn't return anything (is type of void), so it can't be send to ostream.

To solve this problem, your print() method should return whatever you want to printout in one of types supported by ostream which you can find in reference.

answered Nov 9 at 11:16

Rhathin

5391313

answered Nov 9 at 11:16

Rhathin

5391313

answered Nov 9 at 11:16

Rhathin

5391313

answered Nov 9 at 11:16

Rhathin

5391313

1

Or it can take std::ostream& and do whatever it needs to on behalf of the operator<<, though this is arguably less idiomatic nowadays.
– Lightness Races in Orbit
Nov 9 at 11:18

add a comment |

1

Or it can take std::ostream& and do whatever it needs to on behalf of the operator<<, though this is arguably less idiomatic nowadays.
– Lightness Races in Orbit
Nov 9 at 11:18

Or it can take std::ostream& and do whatever it needs to on behalf of the operator<<, though this is arguably less idiomatic nowadays.
– Lightness Races in Orbit
Nov 9 at 11:18

add a comment |

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