C/C++ :: Using Pointers In Stack Program

I am trying to use pointers in a stack program. But i am failing. my push function takes in the array,item im pushing, the reference to the top, and the size of the array.

void push(char stack[], char item, int *top, int max_size) {
if(&top==(max_size-1)) {
printf("Stack is Full
");
return;
} else {
*top=+1;
stack[*top]=item;
} return;
}

And in the main function i pass a randomly pick char value, print it first , and pass it to the array using the push function

#define STACK_SIZE 10
#define STACK_EMPTY -1
int main(){
char s[STACK_SIZE];
int s_top = STACK_EMPTY; // The index of the top of the stack
int *top= s_top;
int max_size=STACK_SIZE;

[Code] .....

I know I am not referencing and dereferencing correctly and probably other stuff also. but i get these 2 errors:

stack.c: In function "push":
stack.c:23:9: warning: comparison between pointer and integer [enabled by default]
if(&top==(max_size-1))

[Code] ....