Thread: Is there any wrong?

1. your paranthesis are unequal
2.you are defining functions inside a function(main function)...this will not work unless you use gcc

Originally Posted by uscuba2

I can not figure out why I am getting compling errors . can someone help? And it there another number to use for bitnot besides -1?

Code:

#include <stdio.h>

int main()
{
    int x, y;

    int bitOr(int x, int y)
    {
        return ~(~ x & ~ y);
    }

    int bitXOr(int x,int y)
    {
        return (x|y) & ~(x&y);
    }

    int bitNot(int x)
    {
        return  x ^ 0xffffffff;
    }

    int isNotEqual(int x, int y)
    {
    return (x^y);
    }

I corrected your indentation; Do you now see the problem?
You should explain what you're trying to do too. It looks like you're trying to implement each bitwise operator using other bitwise operators. In that case, you've succeeded, apart from missing bitAnd.
Instead of specifically writing 0xffffffff, you could just write ~0, however if the purpose is to avoid the ~ operator from within that function, then nevermind. You do understand that the constant must have all bits set right? Using any other value will give the wrong answer in some cases.

Originally Posted by creeping death

1. your paranthesis are unequal
2.you are defining functions inside a function(main function)...this will not work unless you use gcc

This is what I need to to do:

Write 4 C functions, as specified in the table below, which emulate the C operators |, ^, ~, and !=. You may use only straightline code (i.e., no loops or conditionals)and a limited number of C operators .

we are using gcc if I was not what would I remove?
we are to run it in linux

so I enter gcc -o hw hw.c to run

Originally Posted by uscuba2

Write 4 C functions, as specified in the table below, which emulate the C operators |, ^, ~, and !=. You may use only straightline code (i.e., no loops or conditionals)and a limited number of C operators .

What is the set of operators that you are allowed to use?

Ah, okay. Anyway, the point is the your functions should not be defined in the main function. Move them outside (e.g., before, unless you want to provide function prototypes) of the main function.