Question

In C, a pointer contains the memory location of another variable. Are pointer variables stored on the stack or on the heap?

Answer 1

A pointer is just a variable. Think of it as an integer that holds a memory location, so if you have:

int main(...) {
    char *ptr = malloc( 100 );
    ...
}

then ptr is a four- or eight-byte value on the stack that contains the memory location of a 100-byte buffer allocated from the heap. The memory itself is in the heap, the pointer is on the stack.