Merge branch '6-add-pop-function' into 'main'

Resolve "Add pop function"

Closes #6

See merge request !16

.gitignore

+*.o
+main
\ No newline at end of file

stack.c

@@ -18,6 +18,19 @@ void stack_destroy(stack *s){
     s->top = -1;
 }
 
+void stack_pop(stack *s, int *value){
+	if (stack_is_empty(*s)) {
+		return;
+	}	
+	if (s->top == s->capacity/4){
+		s->capacity /= 2;
+		s->data = realloc(s->data, sizeof(int)*s->capacity);
+	}
+
+	*value = s->data[s->top];
+	s->top -= 1;
+}
+
 void stack_peek(stack s, int *value){
     if (!stack_is_empty(s)) {
         *value = s.data[s.top];
@@ -51,4 +64,3 @@ int get_length(stack s)
 {
     return s.top + 1;
 }
-

stack.h

@@ -11,6 +11,7 @@ void stack_init(stack *stack);
 
 void stack_destroy(stack *s);
 
+void stack_pop(stack *s, int *value);
 void stack_peek(stack s, int *value);
 void stack_clone(stack s, stack *clone);
 int get_length(stack s);