fais un main pour tester et mis les includes dans le .h et doit juste voir un truc

main.c

+#include "stack.h"
+
+int main(){
+	stack s;
+	int value = 0;
+	stack_init(&s);
+	// stack_is_empty(stack s)
+	stack_peek(s, &value);
+	stack_pop(&s, &value);
+}
\ No newline at end of file

stack.c

@@ -17,11 +17,17 @@ void stack_peek(stack s, int *value){
 }
 
 // depile
-void stack_pop(stack *s, int *val){
+void stack_pop(stack *s, int *value){
 	if (stack_is_empty(*s)){
 		return;
 	}	
-	*val = s->data[s->top];
+	*value = s->data[s->top];
 	s->top -= 1;
 	printf("pop : %d, top : %d\n", s->data[s->top],s->top);
+
+	// si capacite 2x trop grande, on la rend plus petite
+	if (s->capacity > 2*s->top){
+		s->capacity = s->top;
+		s->data = realloc(s, sizeof(int)*s->capacity);
+	}
 }

stack.h

@@ -16,4 +16,6 @@ typedef struct _stack {
 void stack_init(stack *s);
 void stack_peek(stack s, int *value);
 
+void stack_pop(stack *s, int *value);
+
 #endif