Use Data From One Function To Another

[Madaleno]

Hello, I am learning Programming in C++ and I want to Use Data From One Function To Another. I have tried to achieve it, but failed to perform it. If you know the details from which I can able to perform it, then please provide details for it. I will be thankful to you.

[Modifier]

Hello, I have used the code below and performed the use of data from one function to another:

double funtriangle();

double funtriangle()
{
	double num1;
	double num2;
	double num3;
	double add1;
	double add2;
	double add3;
	
	cout<<"Side 1: ";
	cin>>num1;
	while(num1<=0)
	{
		cout<<"Side lengths must be positive."<<endl;
		cout<<"Side 1: ";
		cin>>num1;
		cout<<endl;
	}

	cout<<"Side 2: ";
	cin>>num2;
	while(num2<=0)
	{
		cout<<"Side lengths must be positive."<<endl;
		cout<<"Side 2: "; 
		cin>>num2;
		cout<<endl;
	}

	cout<<"Side 3: ";
	cin>>num3;
	while(num3<=0)
	{
		cout<<"Side lengths must be positive."<<endl;
		cout<<"Side 3: ";
		cin>>num3;
		cout<<endl;
	}

	add1=num1+num2;
	add2=num2+num3;
	add3=num1+num3;

	if ((add1>num3)&&(add2>num1)&&(add3>num2))
	{
		cout<<"The values of the sides equal a triangle."<<endl;
		cout<<endl;
	}
	else
	{
		cout<<"The values of the sides do not equal a triangle."<<endl;
		cout<<endl;
	}
	
	return(0);
}

[Praetor]

I think that you must need to create a signatures of the function as below:

bool test(double side1, double side2, double side3);

and as below

double check(double side1, double side2, double side3);

From this you will able to do what you want.

[Katty]

I will suggest you to read the books on C++ for getting the result on this. I am not having that much knowledge about c++, I am having knowledge about java. But, I think you can get the solution by referring the books below:

• C++ GUI Programming with Qt 3
• C++ Reference Guide
• ZooLib Cookbook
• C++ in action
• Teach Yourself C++ in 21 Days

[kelfro]

Hello, I think you will able to get the solution for your problem if you simply make use of the Friend keyword. I have read that by using this keyword you can make use of the one function data to the another and get your program to be solved. I have not yet used it, but you can try for making one variable and get your solution.