strange error message

This is a discussion on strange error message within the C++ Programming forums, part of the General Programming Boards category; im getting an error message in this simple program im practicing functions with that says "Command /Developer/usr/bin/g++-4.2 failed with exit ...

  1. #1
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    strange error message

    im getting an error message in this simple program im practicing functions with that says "Command /Developer/usr/bin/g++-4.2 failed with exit code 1" and i have no idea whats causing it. heres my code:
    Code:
    #include <iostream>
    
    using namespace std;
    
    int add (int a, int b, int c, int d, int e);
    int sub (int a, int b);
    int mult (int a, int b, int c, int d, int e);
    float divide (int c, int e);
    
    int main()
    {
    	
    	int a;
    	int b;
    	int c;
    	int d;
    	int e;
    	
    	cout<<"Please input 5 numbers. Press enter in between each number\n";
    	cin>>a;
    	cin.get();
    	cin>>b;
    	cin.get();
    	cin>>c;
    	cin.get();
    	cin>>d;
    	cin.get();
    	cin>>e;
    	cin.get();
    	
    	cout<<"Your 5 numbers were: "<<a<<", "<<b<<", "<<c<<", "<<d<<" and "<<e<<".\n\n";
    	cout<<"The sum of your numbers is: "<< add (a, b, c, d, e) <<".\n";
    	cout<<"The product of your numbers is: "<< mult (a, b, c, d, e) <<".\n";
    	cout<<"The difference of your first 2 numbers is: " <<sub (a, b) <<".\n";
    	cout<<"The quotient of your 3rd and 4th numbers is: "<< divide (c, e) <<".\n\n";
    	cin.get();
    }
    
    int add (int a, int b, int c, int d, int e)
    {
    	return a+b+c+d+e;
    }
    
    int sub (int a, int b)
    {
    	return a-b;
    }
    
    int mult (int a, int b, int c, int d, int e)
    {
    	return a*b*c*d*e;
    }
    
    float divide (int c, int e)
    {
    	return c/e;
    }

  2. #2
    Registered User NeonBlack's Avatar
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    What IDE or command to compile are you using?
    I copied it from the last program in which I passed a parameter, which would have been pre-1989 I guess. - esbo

  3. #3
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    You declare main() as returning an int. What exactly ARE you returning from main()?

  4. #4
    Registered User MacNilly's Avatar
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    It looks as though the compiler itself is producing the error message, not the program. I can't see anything wrong with the program itself. I use GCC and have never gotten an error from forgetting to return a value from main. But you should, so the OP should try that.

  5. #5
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    ah I think I figured it out. the program had a separate c file in it with a hello world program... who knows how that got there...

    i also have another problem with this code. I'm trying to make a do while loop so you can re-run the program however many times you want and it compiles perfectly but no matter what you type it loops instead of just looping if you press y. here it is

    Code:
    int main()
    {
    	int a;
    	int b;
    	float c;
    	int d;
    	float e;
    	char x;
    
    	do {
    	cout<<"please input your 5 numbers. press enter after each number\n";
    	cin>>a;
    	cin.get();
    	cin>>b;
    	cin.get();
    	cin>>c;
    	cin.get();
    	cin>>d;
    	cin.get();
    	cin>>e;
    
    	cout<<"\nThe sum of your numbers is: "<< add (a, b, c, d, e) <<".\n";
    	cout<<"The difference of your first two numbers is: "<< sub (a, b) <<".\n";
    	cout<<"The product of your numbers is: "<< mult (a, b, c, d, e) <<".\n";
    	cout<<"The quotient of your third and fifth numbers is: "<< divide (c, e) <<".\n\n";
    	cin.get();
    	cout<<"Would you like to analyze 5 more numbers? (y/n)\n";
    	cin>>x;
    	cout<<"\n";
    	} while (x = 'y');
    
    	if (x = 'n'){
    		return 0;
    	}
    
    	if (x != 'n' && x != 'y'){
    		cout<<"please input y for yes or n for no.\n";
    		cin>>x;
    	}
    }
    Last edited by dyelax; 06-24-2010 at 08:35 PM.

  6. #6
    Cat without Hat CornedBee's Avatar
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    Quote Originally Posted by rdrast View Post
    You declare main() as returning an int. What exactly ARE you returning from main()?
    Zero, implicitly, as specified by the C++ standard.
    All the buzzt!
    CornedBee

    "There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code."
    - Flon's Law

  7. #7
    the hat of redundancy hat nvoigt's Avatar
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    Code:
    while (x = 'y');
    Change that to:

    Code:
    while (x == 'y');
    Check the if-statement below that line, too.
    hth
    -nv

    She was so Blonde, she spent 20 minutes looking at the orange juice can because it said "Concentrate."

    When in doubt, read the FAQ.
    Then ask a smart question.

  8. #8
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    sdjkla;;jfbslak;djf. I always screw that up. thank you nvoigt.

  9. #9
    CSharpener vart's Avatar
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    Quote Originally Posted by dyelax View Post
    sdjkla;;jfbslak;djf. I always screw that up. thank you nvoigt.
    Then start writing conditions like it other way round

    Code:
    if( 'y' == x)

    and compiler will warn you if you pass = in place of ==
    The first 90% of a project takes 90% of the time,
    the last 10% takes the other 90% of the time.

  10. #10
    C++まいる!Cをこわせ! Elysia's Avatar
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    Warn? Rather, it will spit out an error because a temporary is not an lvalue.
    GCC can also warn of you of this, I think, if you up the warning levels.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

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