C++ – What does the error “expected “;” before obj” mean

c++

I am writing a program in C++ using my own header file.

main.cpp

#include<iostream>
#include"operation.h"

using namespace std;
main()
{
  int a;
  cout <<"Enter the value a";
  cin>>a;

  //class name add
  //obj is object of add
  add obj;
  obj.fun(a);
}

operation.h

class add
{

  void  fun(int b)
  {
    int c,d=10;
    c=d+b;
    cout<<"d="<<d;
  }
}

When I compile using G++ in Linux, it is showing the following errors:

->expected ";" before obj
->obj not declared in this scope

How do I solve this problem? Why is this happening?

Best Solution

You need to add public: at the top of class add. The default for class members is to make them private.

Also, you're missing a semicolon at the end of the class definition. C++ requires class definitions to end with a semicolon following the closing curly-brace (you could actually declare a variable at that point).

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