Thread: Global variables, or...

Should I use global variables or passing the variable to other functions?

I do need a variable to all the program, now, I did hear that using global-variables isn't a nice thing, now I think in some case's is better to use global-variables instead passing them trough all the functions, look:

Code:

#include <stdio.h>
#include <stdlib.h>

//my global variable
char name[100];

[...]
int main() 
{
//here I use my global var..
[....]

Or should I make in this way:

Code:

#include <stdio.h>
#include <stdlib.h>

void foo(char name[], int Blah, int Bloh);

int main(void)
{
     char name[100]; //here isn't global
     [...]
     foo(name,myNum1,myNum2);
     [...]
   return 0;
}

Thanks for the help