C Program : to print the number in Triangle

Write a C Program to Print the gives pattern using nested for loops.

/* It prints the pattern using nested for loops */
   
   #include <stdio.h>
     main()
       {
         int row, col, k = 1; 
         for ( row = 1; row <= 4; row++ )
           {
             for( col = 1; col <= row; col++ )
              printf(" %d \t ", k++)
             printf(" \n ");
           }
       }