Thread: Need help with starting this question

Okay so the question I was assigned was to create a program where the user enters a number to determine how many rows will be printed.

Ex. User enters 3

Output (it should look like a diamond but the forum keeps making it look like this):
1
121
12321
121
1

This is what I've gotten so far:

Code:

#include <stdio.h>

main(){


    int i, j, r;


    printf("Enter number of rows (1-9):");
    scanf("%d", &r);
    for(i=0;i<=r;i++)
    {
        for(j=1;j<=r;j++)
            printf(" ");


    }


    return 0;


}

What are some things I need to know in order to complete the question? I am really stumped on this one.