Static variables + Initialisation
I felt I was a bit grey in this aspect and I found this : http://www.phim.unibe.ch/comp_doc/c_...age_class.html.
He says,
"static' can also be defined within a function. If this is done, the variable is initalised at compilation time and retains its value between calls. Because it is initialsed at compilation time, the initalistation value must be a constant. "
I just tried out a simple code where I didnt initialise the static variable. I was expecting some warning to be displayed when I compiled it with the -Wall option. Instead the static variable was initialised to 0.
Can anyone shed some light on this.
Here's the code :
Code:
# include<stdio.h>
int func()
{
static int i;
i++;
return (i);
}
int main()
{
int count=0;
while(count < 5) {
printf(" count :%d, func = %u\n",count,func());
count++;
}
return 0;
}
And the output :
Code:
count :0, func = 1
count :1, func = 2
count :2, func = 3
count :3, func = 4
count :4, func = 5
