patternOne.c

I/P: How many rows: 5
O/P:
    @	1	1	1	1	
    2	@	2	2	2	
    3	3	@	3	3	
    4	4	4	@	4	
    5	5	5	5	@	

//Logic
#include <stdio.h>
void main()
{
  int i,j,iRow;
  
  printf("How many rows: "); 
  scanf("%d",&iRow);

  for ( i = 1; i <= iRow; i++)
  {
  	for (j = 1; j <= iRow; j++)
  	{
  		if(i==j)
  		{
  			printf("@\t");
  		}
  		else{
  			printf("%d\t",i);
  		}
  	}
  	printf("\n");
  }
}