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C Program to Print Floyd’s Triangle

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The Floyd’s Triangle is a right angled triangle with array of natural numbers. In this article we will show you, How to write a C Program to Print Floyd’s Triangle with example.

C Program to Print Floyd’s Triangle

This C program allows the user to enter the maximum number of rows he/she want to print as Floyd’s triangle. We are going to print the Floyd’s triangle of integers until it reaches the user specified rows.

/* C Program to Print Floyd’s Triangle */
#include <stdio.h>

int main() 
{
  int Rows, i,  j, Number = 1;

  printf(" Please Enter the Number of Rows:  ");
  scanf("%d", &Rows);
	
  printf(" \n Printing FLOYD'S Triangle \n \n");
  for ( i = 1 ; i <= Rows; i++ ) 
    {
	for ( j = 1 ; j <= i; j++ ) 
         {
	   printf("%d ", Number);
	   Number++;
	 }
	printf("\n");
     }
  return 0;
}

OUTPUT

C Program to Print Floyd’s Triangle 1

ANALYSIS
Following statements will allow the User to enter the range or maximum Number of rows he/she want to print.

 printf(" Please Enter the Number of Rows:  ");
  scanf("%d", &Rows);

Now let us see the Nested for loop

 for ( i = 1 ; i <= Rows; i++ ) 
    {
	for ( j = 1 ; j <= i; j++ ) 
         {
	   printf("%d ", Number);
	   Number++;
	 }
	printf("\n");
     }

Let us see the execution process of C Program to Print Floyd’s Triangle in an iteration wise

Outer Loop – First Iteration
From the above screenshot you can observe that, The value of i is 1 and Rows is 5 so, the condition (i <= 5) is True. So, it will enter into second for loop

Inner Loop – First Iteration
The j value is 1 and the condition (j <= 1) is True. So, it will start executing the statements inside the loop. Following statement will print Number as Output and we all know that, Number = 1 so, 1 is printed

printf("%d ", Number);

Following statement will increment the Value of Number by 1 using the Increment Operator

Number++;

Inner Loop – Second Iteration
The j value will be 2 and the condition (2 <= 1) is False so it will exit from the second loop. The following statement is used to terminate the current line

printf("\n");

Outer Loop – Second Iteration
The value of i will be 2 and the condition (2 <=5) is True. So, it will enter into second for loop

Inner Loop – First Iteration
The value of j is 1 and the condition (1 <= 2) is True. So, it will start executing the statements inside the loop. Following statement will print Number as Output and we all know that, Number = 2 so, 2 is printed

printf("%d ", Number);

Following statement will increment the Value of Number by 1

Number++;

Next, j value will also be incremented by 1.

Inner Loop – Second Iteration
The value of j is 2 and the condition (2 <= 2) is True. So, it will start executing the statements inside the loop. It means, 3 will be printed.

Inner Loop – Third Iteration
The j value will be 3 and the condition (3 <= 2) is False so it will exit from the second loop.

This will happen until it reaches to 5 and after that both the Inner Loop and Outer loop will be terminated.

C Program to Print Floyd’s Triangle without Natural numbers

This program allows the user to enter the number of rows he/she want to print as Floyd’s triangle. In this example we are going to print the Floyd’s triangle using the * symbol. This program can also be said as print Right angled triangle with * symbol’s.

/* C Program to Print Floyd’s Triangle */
#include <stdio.h>

int main() 
{
  int Rows, i, j;
	
  printf(" Please Enter the Number of Rows:  ");
  scanf("%d", &Rows);
	
  printf(" \n Printing FLOYD'S Triangle \n \n");
  for ( i = 1 ; i <= Rows; i++ ) 
    {
      for ( j = 1 ; j <= i; j++ ) 
	{
          printf("* ");
	}
      printf("\n");
    }
  return 0;
}

OUTPUT

C Program to Print Floyd’s Triangle 2