C++ Value Return Function that produces a true/false

[zamaam0728]

I am at the end of my first semester of C++, and I'm not sure what I should do to make this program meet the requested specifications. The assignment is as follows:

Write a function called ignoreCaseCompa re() that has two character (char) parameters. The function should return true if the two characters received represent the same letter, even if the case does not agree. Otherwise, the function should return false. Then, write a simple main() function that uses your ignoreCaseCompa re().

Additional instructions:

Here is the function heading:
bool ignoreCaseCompa re(char c1, char c2)

{

//Write the code to compare c1 with c2 and return true/false

}


Here is what I have:

#include <iostream>
 
using std::cout;
using std::cin;
using std::endl;
 
//function prototype
bool ignoreCaseCompare (char first, char second);
 
int main ()
{
    char first = ' ';
    char second = ' ';
 
    cout << "Enter a letter: ";
    cin >> first;
    cout << "Enter another letter: ";
    cin >> second;
 
    first = toupper(first);
    second = toupper(second);
 
    cout << "Are the letters the same? " <<
 
    return 0;
}
//******function defintions*****
bool ignoreCaseCompare (char one, char two)
 
{if (one == two)
return true;
else
return false;
}
 
    //end main function

This programs is much easier without the value-return function. Can anyone offer any advice or direction?

[Frinavale]

Banfa, what is a "iomanipiulator "????

[Frinavale]

No, no, no absolutely never ever ever never ever never ever (getting the picture?) should main return void.

In school I was fist taught that main should be void....I'm pretty sure of that. It wasn't until I started doing bash scripting did I see why the main function should return something and so I started implementing the main method so that it returned an int.

[Banfa]

Opps, I mean iomanipulator they are the things, like boolalpha that you can pass to cout to perform all the formating you used to do with the codes in the printf % formats. Defined in the header <iomanip>.

For instance
Set text or numerical display of bool
Set field widths with left or right alignment
Set precision
Set display format of floating points
Set base to display integers
Set the field padding character

Here's the reference

[Banfa]

In school I was fist taught that main should be void....

Yes it is unfortunate the some schools did, and still do, teach main returning void for C/C++ programming. It doesn't change the fact it is just about as wrong as you can get.

[Frinavale]

Thanks for the reference (link seems to be down though or I just can't access it due to network stuffs).


At least now I know what you're talking about :)

[Banfa]

The link is working for me.

[zamaam0728]

I'm still working on this. I feel like such a numbskull because it's still not right, and I have to make a change to this program for the next assignment.

Here are the changes I have made per your advice:

isSameCharacter = ignoreCaseCompare (first, second);
    cout << "The two letters are the same: " << isSameCharacter?"true":"false" << endl;
    return 0;
    // end of main function
}
//****function defintions*****
bool ignoreCaseCompare (char a, char b)
{
    bool isSameCharacter = false;
    {
        if (toupper (a)== toupper (b))
        isSameCharacter = true;
        else
        isSameCharacter = false;
    }
 
        return isSameCharacter;
 
}

Error messages:
error C2563: mismatch in formal parameter list
error C2568: '<<' : unable to resolve function overload

[donbock]

To use CODE tags ...

• Select [highlight] the source code in your post.
• Click on the "#" button on the message toolbar.

Can't tell from your snippet:

• What type is variable isSameCharacter?
• What type is variable first?
• What type is variable second?
• What is the function prototype for ignoreCaseCompa re?

Usually error messages from the compiler identify the line of source code they are complaining about. That information is always helpful in interpreting the error message. Please tell us which source line the error messages refer to.

[zamaam0728]

#include <iostream>
 
using std::cout;
using std::cin;
using std::endl;
 
//function prototype
bool ignoreCaseCompare(char, char);
 
int main ()
{
    char first = ' ';
    char second = ' ';
    char ansTrueFalse = ' ';
 
    cout << "Enter a letter: ";
    cin >> first;
    cout << "Enter a second letter: ";
    cin >> second;
 
    ansTrueFalse = ignoreCaseCompare (first, second);
    cout << "The two letters are the same: " << ansTrueFalse?"true":"false" << endl;
    return 0;
    // end of main function
}
//****function defintions*****
bool ignoreCaseCompare (char a, char b)
{
    bool ansTrueFalse = false;
    {
        if (toupper (a)== toupper (b))
        ansTrueFalse = true;
        else
        ansTrueFalse = false;
    }
 
        return ansTrueFalse;
 
}
 
//end of isSameCharacter 

errors are referencing line 22

[donbock]

Lines 8, 14, and 21 are inconsistent. What is the return type of ignoreCaseCompa re and why aren't you using that type?

What do you expect line 22 to do?
There are three double-quotes in line 22 -- sounds unbalanced.
What is that question mark supposed to do in line 22?