How to find this error

Question

1.00/5 (1 vote)

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C

#include<iostream>
using namespace std;
class item
{
    public:
    int itemcode,qty;
    float price;
void input()
{
    cout<<"\n enter item code";
    cin>>itemcode;
    cout<<"\n enter quality";
    cin>>qty;
    cout<<"\n enter price";
    cin>>price;
}
void output
{
    float amount;
    amount=qty*price;
    cout<<"\n total amount="<<amount;
};
};
int main()
{
    item t;
    t.input();
    return 0;
}

What I have tried:

error :variable or field 'output' declared void

Posted 13-Feb-21 5:51am

Fahd5007

Updated 13-Feb-21 8:20am

KarstenK

v3

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3 solutions

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User 15025775 · Answer 1 · 2021-02-13T05:58:00

Solution 1

Try

void output()

instead of

void output

Posted 13-Feb-21 5:58am

User 15025775

Luc Pattyn · Answer 2 · 2021-02-13T06:00:00

Solution 2

Quote:
variable or field 'output' declared void

lets take that literally.

variables/fields can't be void, they always have a type.

methods can be void (i.e. not return anything). Now why could a compiler think something that was intended to be a method isn't a method?

:)

Posted 13-Feb-21 6:00am

Luc Pattyn

Comments

[no name] 13-Feb-21 12:53pm

My tiny 5 for the detailed explanations

Luc Pattyn 13-Feb-21 13:03pm

Thanks.
I tend to make people think, and hopefully learn...

:)

OriginalGriff · Answer 3 · 2021-02-13T06:01:00

Solution 3

You forgot the brackets:

void output
{
    float amount;
    amount=qty*price;
    cout<<"\n total amount="<<amount;
};

Should be:

void output()
{
    float amount;
    amount=qty*price;
    cout<<"\n total amount="<<amount;
};

If you double click the error in VS, it will take you straight to the line it found a problem with. For command line compilers, they will list the filename, line and column numbers with the error message, and CTRL+G will take you to a specific line number in most text editors.

But ... do yourself a favour and sort out your indentation - it makes you code a lot easier to read.

Posted 13-Feb-21 6:01am

OriginalGriff

Comments

[no name] 13-Feb-21 12:06pm

plagarized

CHill60 23-Feb-21 7:23am

Given that it was posted only 3 minutes after yours I doubt very much it was "plagiarized" or that your solution (or Luc's) even gave OrignalGriff the idea. Much more likely is that it took him much longer to type out his solution, given that he has also included some useful advice on how to find out which line is causing the error

[no name] 23-Feb-21 7:55am

I'm aware I forgot the smiley. The comment was by no means meant seriously.

Rick York 13-Feb-21 15:29pm

Those are brackets? I call them parenthesis. These [] are brackets.

OriginalGriff 13-Feb-21 15:50pm

Nope, those are "square brackets". And these {} are "curly brackets".
Brackets also come in metal, plastic, abs, and wood; but they tend not to compile.

Very versatile things, brackets. :D

[no name] 20-Feb-21 9:15am

Parentheses are round brackets ;p
*lol* https://www.ef.com/ca/english-resources/english-grammar/brackets-and-parentheses/[^]

CHill60 23-Feb-21 7:20am

I always knew them as
() = parentheses
[] = brackets
{} = braces
<> = chevrons
Only started adopting the "round brackets", "square brackets", "curly brackets", "angle brackets" for non-technical (i.e. non-maths, non-IT) people. But then again, I am old. :laugh: