programming-examples/c/Pattern_Programs/1 12 123....c

/*
1        1
12      21
123    321
1234  4321
1234554321

*/
#include<stdio.h>
void main()
{
    int i,j,k;
    for(i=1; i<=5; i++)
        {
            for(j=1; j<=5; j++)
                {
                    if(j<=i)
                        printf("%d",j);
                    else
                        printf(" ");
                }
            for(j=5; j>=1; j--)
                {
                    if(j<=i)
                        printf("%d",j);
                    else
                        printf(" ");
                }
            printf("\n");
        }
}