Piramid Usinf For Loop

/*
C Program : Piramid
Calibre IT & Management Institute
[ Krishna Suman ]
*/
#include<stdio.h>
main()
{
int i, j,a=9 ,k;
clrscr();
for(i=1; i<=9; i++)
{ printf("\t\t");

a=a-1;
for(j=a; j>=1; j--)
{
printf(" ");
}
for(k=1; k<=i; k++)
{
printf("0");
printf(" ");
}
printf("\n");
}

getch();
}
=====================  OUTPUT  ==================================