Sequential Search C++

#include<stdio.h>
#include<conio.h>
#include<math.h>

int array[100];
int cari,i, flag, a, e,pil,max,kel=1,titip,ok,ed;
float posisi;
void sequential();
main()
{

Sequential Search

#include<iostream.h>
#include <stdio.h>
#include <conio.h>
using namespace std;
int sequential_s(int array[],int size,int elemen);
int angka[10];
int main()
{
int size,a;
int data[99];

STACK

#include <stdio.h>
# include <stdlib.h>
using namespace std;
void push();
void pop();
void cetak ();
int x;
int s[99];
int t=-1,i,a,stack,menu;
char urut = 'Y';
int main (void)