Pyramid pattern Program

1.Lower triangle counting pattern - 

#include <stdio.h>

int main()
{
    int i,j;
    for(i=1;i<=5;i++)
    {
        for(j=1;j<=i;j++)
        {
            printf("%d",j);
        }
        printf("\n");
    }
    return 0;
}

Output -

1
12
123
1234
12345

2.Upper triangle counting pattern - 

#include <stdio.h>

int main()
{
    int i,j;
    for(i=5;i>=0;i--)
    {
        for(j=1;j<=i;j++)
        {
            printf("%d",j);
        }
        printf("\n");
    }
    return 0;
}

Output -

12345
1234
123
12
1