Number Pattern - 34

             1
           2 3
         4 5 6
      7 8 9 10
11 12 13 14 15

#include<stdio.h>
int main()
{
  int i,j,k;
  k=1;
  for(i=1;i<=5;i++)
  {
    for(j=5;j>=1;j--)
    {
      if(j > i)
        printf("   ");
      else
        printf("%3d",k++);
    }
    printf("\n");
  }
  return 0;
}

Related Links:
- More Number Pattern Programs
- Star Pattern Programs in C
- Alphabet Pattern Programs in C
- Series Programs in C