A0/Main/Stack/headers/Stack.h
bool isEmpty() {
	    /* replace with your code */
	    if (head == NULL) return true;
	    return false;
	}
// return true if there are not any items in the stack
return true if there are not any items in the stack
return true if there are not any items in the stack
bool isEmpty() {
	    if (head == NULL) return true;
	    return false;
	}
bool isEmpty ( ) { if ( head == NULL ) return true ; return false ; }
return true if there are not any items in the stack
return true if there are not any items in the stack
/* replace with your code */