program to produce STAR pattern

#include<iostream.h>
#include<conio.h>
void main()
{
    int ch,i,j,in=1;
    char ans='y';
    clrscr();
    for(i=1;i<=5;i++)
    {
        for(j=1;j<=5-i&&i<=3;j++)
            cout<<"\t";      //to leave space before stars for upper triangle

        for(j=1;j<=i-1&&i>3;j++) //to leave space before stars for lower triangle
                 cout<<"\t";     
        for(j=1;j<=in;j++)       //to display stars
        cout<<"*\t";

        if(i+1<=3)
        in=in+2;                //to decide no of stars in each row
        else
        in=in-2;
        cout<<"\n\n";
    }
    getch();
}