Checking 2d arrays for equality

[CyberFed]

Say i have:

array1[10][10]
array2[10][10]


and i fill array1 with all zero's how can i write a function that will check array2 to see if it is equal to array1

 

[TwistedAnimator]

bool diff = false;

for(int i = 0; i < 10; i++)
{
    for(int j = 0; j < 10; j++)
    {
        if(array1[i][j] != array2[i][j])
        {
            diff = true;
            break;
        }
    }
}

This is assuming you're using C/C++. If C++, this will run fine. However, if you're using C, you have to define true and false and typedef bool.

 

[Damian]

True (err, pardon the bad pun, I didn't mean it honestly), but you probably shouldn't typedef things as names that exist in proper C++ syntax. Perhaps go with Bool, BOOL, myBool, etc.

 

[Titan386]

Or just use the old fashioned 1 and 0.

Though its not always a good choice, one could also use preprocessor directives to ensure the typedefs don't interfere with a C++ compiler. For example:

#ifndef __cplusplus
#define true 1
#define false 0
typedef short bool;
#endif /* __cplusplus */