C++ Program .Write a program to generate the following pattern

Write a program to generate the following pattern
  *
 ***
****

#include<stdio.h>
#include<conio.h>
void main()
{
int n,row=1,col=40,i=0,j,k=0,count=1;
int a[10];
clrscr();
i=n-1;
printf ("\n pyramid of how many stars:-");
scanf("%d",&n);
clrscr();
for (row=n;row>=1;row--)
{
k=0;
k=40-(4*(row-1));
i= row-1;
for (col=40;col>=k;col=(col-4))
{
gotoxy(col,row);
printf("*");
--i;
}
}
for(count=n;count>=1;count--)
{
k=0;
k=40+(4*(count-1));
i=count-1;
for (col=40;col<=k;col=(col+4))
{
gotoxy(col,count);
printf("*");
--i;
}
}
getch();
}


*/output
                                       *
                                   *   *   *
                               *   *   *   *   *
*/