Help! How to enter values in a specific format

I want to enter the values in this format:
2
7 8 9
1 2 3
7 8
4
4 5 6
7 5 3
4 0 9
7 3 6
7 3
7 6
1 5
0

the first line is an integer 'n', following will be of 3 integers in each n lines, then 2 integers in each n-1 lines, if the next value is equal to ZERO then terminate else continue to accept the values in the same format.

Code:

---

#include<stdio.h>
main()
{ int a[100][10]={0},b[100][10]={0},i,j=-1,n,nxt;

do
{
    i=-1;
    j++;
scanf("%d",&n);
 do{
    i=i+1;
    scanf("%d",&a[i][j]);
    printf(" part1\n ");
 }while(i<3*n-1);

i=-1;
 do{
    i=i+1;
    scanf("%d",&b[i][j]);
    printf(" part2\n ");
 }while(i<n-1);
 scanf("%d",&nxt);
}while(nxt!=0);
 return 0;
 }

---

please help

Forget the code for awhile, and look for the pattern you see when you do this by hand, you'll want to work it through by hand, a few times. Note the pattern you follow as you do so:

get a number: n
print n rows of digits, with three digits each
then print --n number of rows with (the new n's), number of digits

until --n is one.

You'll find this a lot easier if you use separate functions for the printing, and just call them in a loop.

Have you used separate functions before?

And welcome to the forum! :cool;