Class is not recognized

Question

5.00/5 (1 vote)

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C++

//program
#include<iostream.h>
class student
{
int rollno;
char name[20];
int marks;
public:
student(int rollno,char name[20],int marks);
student(student &s)
{
rollno=s.rollno;
name==s.name;
marks=s.marks;
}
void display()
{
cout<<rollno<<name<<marks;
}
};
void main()
{  str="hka";
student stud1(23,str,100);
student stud2(stud1);
stud2.display();
}

Pls tell me where i have to correct my code..

What I have tried:

Tried to initialize the string

Posted 19-Sep-18 0:53am

H.K.A2

Updated 19-Sep-18 1:57am

Leo Chapiro

v3

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3 solutions

Solution 1

You must implement the first student constructor. Class names are starting with a capital letter.

Ans the "str" variable isnt defined. Else read the the error messages with more care and google for the error number. Mostly they are understandable.

Visit some tutorials like the Learn CC++ tutorial for learning more about programming, like code syntax and debugging.

Posted 19-Sep-18 1:39am

KarstenK

Comments

CPallini 19-Sep-18 8:06am

No, Class names don't need to be capitalized.

Solution 3

What compiler are you using? Turboc++ 3.0? If so, start with ditching it.
cout is in std namespace.
Use iostream not iostream.h,
you need to declare constructor body
Your str is not declared

Posted 19-Sep-18 1:57am

Mohibur Rashid

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Leo Chapiro · Accepted Answer · 2018-09-19T01:55:00

Try this:

C++

//program
#include <iostream>

class student
{
private:
	int rollno;
	char name[20];
	int marks;

public:
	student(int _rollno, const char* _name, int _marks)
	{
		memset(name, 0, 19);
		rollno = _rollno;
		strcpy_s(name, _name);
		marks = _marks;
	}

	student(student &s)
	{
		rollno = s.rollno;
		strcpy_s(name, s.name);
		marks = s.marks;
	}

	void display()
	{
		std::cout << rollno << ", " << name << ", " << marks;
	}
};

void main()
{
	const char *str = "hka\0";
	
	student stud1(23, str, 100);
	student stud2(stud1);
	stud2.display();
}