Thread: why extern getting error

Code:

extern int i=30;
int main()
{
printf("%d \n",i);
return 0;
}

output : warning: ‘i’ initialized and declared ‘extern’

Code:

int main()
{
extern int i=30;
printf("%d \n",i);
return 0;
}

out put : error: ‘i’ has both ‘extern’ and initializer

any one can suggest me why in one program getting erro and why in another program getting warining?

Originally Posted by BEN10

I'm not getting any error or warning with the first code.

Depends on whether you're using a C or C++ compiler.

Why do you need extern here, first of all?