First program(Calculator) Please help!

[EmniTy]

Well, I'm trying to make my first program, in this case a calculator.
But when i run it, i enter the first number, and then (per example) - and then it closes... but i have no idea why.
could you please help me??

#include <iostream>
using namespace std;

int Plus() {
	int num1;
	int num2;
	cout << "The Answer is: " << num1 + num2 << endl;
	cout << "Press ENTER to continue";
	getchar();
	return 0;
}

int Min() {
	int num1;
	int num2;
	cout << "Press ENTER to continue";
	getchar()
	return 0;
}

int Divide() {
	int num1;
	int num2;
	cout << "Het antwoord is: " << num1 / num2 << endl;
	cout << "Press ENTER to continue";
	getchar();
	return 0;
}

int Multiply() {
	int num1;
	int num2;
	cout << "Het antwoord is: " << num1 * num2 << endl;
	cout << "Press ENTER to continue";
	getchar();
	return 0;
}

int main() {
	int num1, num2;
	int i;
	cout << "Enter the sum." << endl;
	cin >> num1;
	cin >> i;
	cin >> num2;
	if(i == '+')
		Plus();
		else if (i == '-')
			Min();
		else if (i == '/')
			Divide();
		else if (i == '*')
			Multiply();
	else {
		cout << "The sum is invalid." << endl;
		cout << "Press ENTER to continue..." << endl;
		getchar();
	}
}

thanks.

[GADSLyTq]

I provided a link that I believe might help you with your problem.

http://www.cplusplus.com/forum/beginner/1988/

Are you using an IDE or terminal?

[EmniTy]

thanks for looking at my post, but it doesn't work. It still only lets me enter the first number and then the operator, and then the console shuts down(while i still have to enter the 3rd number).
Do you have another idea that could solve the problem?

[EmniTy]

I'm using visual C++ 2010 Express

[wjee0910]

First you need to add a semicolon on line 17.
Then read some tutorial on C++ function parameters.
The variables num1 & num2 you used in main() and all other functions are unrelated, except for having the same variable names. You might want to also read about function scope.

[EmniTy]

thanks, i'll try that now, i'll let you know if it worked.

[GADSLyTq]

I see many problems with your current code. As wjee0910 stated read up on function in c++. If you have any further questions please feel free to ask.

[EmniTy]

And what about this? i read the tutorial at the documentation part( http://cplusplus.com/doc/tutorial/functions/) so this is what i got now, is it better?(it still does the same as before(doesn't let me enter the last number))

#include <iostream>
using namespace std;

int Plus(int a, int b) 
{
	int r;
    r=a+b;
    return (r);
}

int Min(int a, int b) 
{
	int r;
    r=a-b;
    return (r);
}

int Divide(int a, int b) 
{
	int r;
    r=a/b;
    return(r);
}

int Multiply(int a, int b) 
{
	int r;
    r=a*b;
    return (r);
}

int main() 
{
   	int num1, num2;
	int i;
	cout << "Enter the sum." << endl;
	cin >> num1 >> i >> num2;
    switch (i) {
           case '+': cout << "Result: " << Plus(num1,num2);
                break;
           case '-': cout << "Result: " << Min(num1,num2);
                break;
           case '*': cout << "Result: " << Multiply(num1,num2);
                break;
           case '/': cout << "Result: " << Divide(num1,num2);
                break;
           default : cout << "The sum is invalid." << endl;
    system("PAUSE");  
    return 0;
	}
}

[wjee0910]

Glad that you now know the basics of functions.
Suggestions:
Line 37: Use "Enter the equation:" instead. It kinda confused me.
Use type char for i.

[EmniTy]

tyvm for ur help :D, it works perfect now.