How do I solve this expected unqualified-id at end of input and 'expected unqualified-id before '}' token'

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#include <iostream>

using namespace std;

class Parallelogram_Area
{
    public: 
    int area;

    Parallelogram_Area(int b, int h);
    {
        Parallelogram_Area::Parallelogram_Area(int b, int h);
        {
            area = b*h;
            cout<<"The area of the parallelogram is: "<<area;
 }
~parallelogram_area();
 {
 ~parallelogram_area::~parallelogram_area();
 cout<<"object destroyed";
}
};

int main()
{
 int= base;
 height;
 cout<<"enter base:= ";
 cin="">>base;
 cout<<"Enter height: ";
 cin>>height;
 Parallelogram_Area Shape1(Base, Height);
}

What I have tried:

I have spent a lot of time surfing the web for solutions and wrecking my brain to solve these 2 errors.
The errors are on line 11 at the '{' symbol
and on the last line at the '}' symbol
I really need help

Posted 10-Jun-23 20:05pm

w3bUs3r

Updated 11-Jun-23 19:18pm

KarstenK

v5

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2 solutions

Solution 2

Your class still does not look right. It should look like this :

C++

#include <iostream>

using namespace std;

class Parallelogram_Area
{
public: 
   int area;

   Parallelogram_Area( int b, int h )   // constructor
   {
      area = b*h;
      cout << "The area of the parallelogram is: " << area;
   }

   ~Parallelogram_Area()                // destructor
   {
      cout<<"object destroyed";
   }
};

Posted 11-Jun-23 6:39am

Rick York

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OriginalGriff · Accepted Answer · 2023-06-10T20:28:00

It's difficult to be sure, because your additions don't help, and the code appears a bit corrupted: use the "Improve Question" widget to paste in a fresh cope and select "Code block" in the paste pop-up.
Then add a copy'n'paste of the whole error message - it contains significant information which may be relevant.

But if I try to uncorrupt it and then indent it correctly:

C++

#include <iostream>

using namespace std;

class Parallelogram_Area
  {
  public:
  int area;
  
  Parallelogram_Area(int b, int h);
    {
    Parallelogram_Area::Parallelogram_Area(int b, int h);
      {
      area = b*h;
      cout<<"The area of the parallelogram is: "<<area;
      }
    ~parallelogram_area();
      {
      ~parallelogram_area::~parallelogram_area();
      cout<<"object="" destroyed";
      }
    };
  
  int main()
    {
    int="" base;
    height;
    cout<<"enter="" base:="" ";
    cin="">>base;
    cout<<"Enter height: ";
    cin>>height;
    Parallelogram_Area Shape1(Base, Height);
    }

The first thing I see is that there is a missing "}" to end the class definition - that will cause an error.

Then there is this bit:

C++

Parallelogram_Area(int b, int h);
  {
  Parallelogram_Area::Parallelogram_Area(int b, int h);

What is the "{" doing there? The semicolon at the end of the previous line indicates a function prototype - which can't have a body, so the "{" will also throw an error.

Fix those, and try compiling again.

You should expect to get syntax errors every day, probably many times a day while you are coding - we all do regardless of how much experience we have! Sometimes, we misspell a variable, or a keyword; sometimes we forget to close a string or a code block. Sometimes the cat walks over your keyboard and types something really weird. Sometimes we just forget how many parameters a method call needs.

We all make mistakes.

And because we all do it, we all have to fix syntax errors - and it's a lot quicker to learn how and fix them yourself than to wait for someone else to fix them for you! So invest a little time in learning how to read error messages, and how to interpret your code as written in the light of what the compiler is telling you is wrong - it really is trying to be helpful!

So read this: How to Write Code to Solve a Problem, A Beginner's Guide Part 2: Syntax Errors[^] - it should help you next time you get a compilation error!

I'm not saying we don't want to help you fix them - sometimes I can't see my own errors because I read what I meant to write - but fixing syntax errors is part of the job, and if you can't do it for yourself people are going to look at you as a bit weird should you get a job in the industry!