Making Pyramid with C/C++

#include
#include

void main()
{
int i = 0, j , n ;
clrscr();
printf("How many rows in pyramid:");
scanf("%d",&n);

while(i {
j=0;
while(j<=i)
{
gotoxy(30+j,10+i);
printf("%d",j);
j++;
}
j=0;
while(j<=i)
{