[Solved] Can’t use global variables with gcc

Question

You can declare global variables but you have to initialize inside main like this:
char* vidmem;

char* vidmem;

int main()
{
    vidmem = (char*)0xb8000;

    vidmem[0] = 'x';
    vidmem[1] = 0x0f;
}

Accepted Answer

You can declare global variables but you have to initialize inside main like this:
char* vidmem;

char* vidmem;

int main()
{
    vidmem = (char*)0xb8000;

    vidmem[0] = 'x';
    vidmem[1] = 0x0f;
}