I tried to insert and display values from class type array can somebody make me right ? thank you

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C++

#include<iostream>
using namespace std;
Class one
{
	public:
	string first;
	string second;
	int previousValue;
	int nextValue;
	void getData();
	void setData();
};
class two
{
	public:
	one array[10];
	void loadRecord();
};
int main()
{
	two ins;
	return 0;
}
two::loadRecord()
{
	for(int i=0;i<10;i++)
	{
		array[i]=//doesnot take input
	}
	for(int i=0;i<10;i++)
	{
		cout<<array[i]<<endl;//doesnot give output
	}

}

What I have tried:

the code above i have tried but it didnt give the output

Posted 19-Mar-16 1:55am

Member 12398690

Updated 19-Mar-16 11:46am

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2 solutions

Solution 2

You should learn to use the debugger as soon as possible. Rather than guessing what your code is doing, It is time to see your code executing and ensuring that it does what you expect.

The debugger allow you to follow the execution line by line, inspect variables and you will see that there is a point where it stop doing what you expect.
Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]
http://docs.oracle.com/javase/7/docs/technotes/tools/windows/jdb.html[^]
https://www.jetbrains.com/idea/help/debugging-your-first-java-application.html[^]

Posted 19-Mar-16 11:46am

Patrice T

Comments

Member 12398690 20-Mar-16 6:22am

ok then

#include<iostream>
using namespace std;
Class one
{
public:
string first;
string second;
int previousValue;
int nextValue;
void getData();
void setData();
};
class two
{
public:
one array[10];
void loadRecord();
};
int main()
{
two ins;
ins.loadRecord();
return 0;
}
void two::loadRecord()
{
for(int i=0;i<10;i++)
{
array[i]= "asdfgg";//doesnot take input
}
for(int i=0;i<10;i++)
{
cout<<array[i]<<endl;//doesnot give output
}

}

can you run this code and show me the output.???

Patrice T 20-Mar-16 6:47am

Use Improve question to update your question with new code.
Run your code on debugger, line by line and see what the code is really doing.

Member 12398690 21-Mar-16 0:54am

there is no mistake to improve question i just forget to call loadResults() function in main, rest of the code is same. its very simple coding no need debugger to see each line every one can check mate. thanx

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Sascha Lefèvre · Accepted Answer · 2016-03-19T02:08:00

Solution 1

At this line:

C++

two ins;

..you create an instance "ins" of your class two. And that's all your program does before it terminates.

You need to actually call loadRecord() on it.

And on this line:

C++

array[i]=

..it looks like you want to assign a new instance of your class one to the individual array indices but there already are (uninitialized) instances.

There are more issues but I suggest you start with fixing these.

I would recommend you to use names for your classes, class members and local variables that actually mean something. "one", "two", "ins", "array" will get pretty confusing once your programs get a bit larger.

Posted 19-Mar-16 2:08am

Sascha Lefèvre

Updated 20-Mar-16 0:59am

v2

Comments

Maciej Los 19-Mar-16 16:14pm

Hawk eye!

Member 12398690 20-Mar-16 6:23am

it was mistake when i type the code.
but even-though it will not gives output.

Sascha Lefèvre 20-Mar-16 7:02am

You attempt to use the operator << with your "whole" class one but there is no operator defined for that. You could either use the operators defined for standard types by sending the members of class one one after another to the output stream or define ("overload") the << operator for your class one.

Sascha Lefèvre 20-Mar-16 7:05am

Also, you attempt to assign a string to the array indices of array but array is of type one so you would have to assign instances of one to it. Which is unneccessary because it already contains (uninitialized) instances. Instead you might want to set the members of the instances of each array index.