Stack_array

//by FamiHug
#include <stdio.h>
#define MAX 50
float a[MAX];
int t;

void init_stack();
int full();
int empty();
void push(float);
float pop();

int main()
{
    float y;
    init_stack();
    printf("CHUONG TRINH MINH HOA STACK\n");
    printf("Da khoi tao stack. T=%d\n",t);
    printf("Them vao stack 1 phan tu: ");
    scanf("%f",&y);
    push(y);
    printf("T=%d\n",t);
    printf("Them vao stack 1 phan tu nua: ");
    scanf("%f",&y);
    push(y);
    printf("T=%d\n",t);
    printf("Lay 1 phan tu ra khoi stack.\n");
    y = pop();
    printf("T=%d x=%g\n",t,y);
    return 1;
}

void init_stack()
{
    t=0;
}

int full()
{
    if(t==MAX) return 1;
    else return 0;
}

int empty()
{
    if(t==0) return 1;
    else return 0;
}

void push(float x)
{
    if(full()) printf("\nStack day!");
    else
    {
        a[t] = x;
        t++;
    }
}

float pop()
{
    if(empty())
    {
        printf("\nStack rong!");
        return 0;
    }
    else
    {
        t--;
        return a[t];
    }
}