What is wrong with my program

This is a discussion on What is wrong with my program within the C++ Programming forums, part of the General Programming Boards category; ok i put the variables as a global variable (if these are global variables) Code: float x; float y; char ...

  1. #16
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    ok i put the variables as a global variable (if these are global variables)
    Code:
    float x;
    float y;
    char a;
    
    float gathering()
    and it says that answer is not being initialized.

  2. #17

  3. #18
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    i found the answer, this is my new code
    Code:
    #include <iostream>
    #include <cmath>
    
    using namespace std;
    float math()
    {
    	float x;
        float y;
        char a;
    	float answer;
       cout<<"enter an problem (operations are x,/,+,-,^,s2(square root))";
       cin>> x >> a >> y;
    
    	switch (a){
    	case 's':
    		answer = sqrt (x);
    		break;
    	case 'x':
    		answer = x*y;
    		break;
    	case '/':
    		answer = x/y;
    		break;
    	case '+':
    		answer = x+y;
    		break;
    	case '-':
    		answer = x-y;
    		break;
    	case '^':
    		answer = pow (x,y);
    		break;
    	}
    	return answer;
    }
    thank you all for the help.
    Last edited by bijan311; 12-12-2009 at 10:13 AM.

  4. #19
    Registered User jeffcobb's Avatar
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    Henderson, NV
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    875
    Quote Originally Posted by bijan311 View Post
    ok i put the variables as a global variable (if these are global variables)
    Code:
    float x;
    float y;
    char a;
    
    float gathering()
    and it says that answer is not being initialized.
    You know, C structs like C++ classes can have constructors and as such, you can pre-initialize the internal variables to known or default values....

    Just saying...

    Jeff

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