#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define STACK_SIZE 10

struct stack{
    float *values;
    int size;
    int capacity;
};

struct stack* create_stack (int capacity) {
    struct stack* s = malloc (sizeof(struct stack));
    if (s==NULL) {
        printf("Error!");
        exit(1);
    }
    s->values = malloc(capacity * sizeof(float));
    if (s->values==NULL) {
        printf("Error!");
        free(s);
        exit(1);
    }
    s->size = 0;
    s->capacity = capacity;
    return s;
}

int main() {
    return 0;
}