Algorithm
- Create the variables for holding row number and column number as i and j. Then further take a number to display the rows as 'row' and set the variable count to 1 which will print the elements.
- Now Use the concept of nested loops.
- The iteration of the outer for loop begins with I = 1 and continues up to total rows.
- Iteration of the inner for loop begins at j = 1 and ends at (j=i).
- Print the count values.
- Increase count by one or make count = count + 1.
- After each iteration of the inner for loop, jump to a new line.
- Stop
Program to print the Floyd's triangle using for loop
C
#include <stdio.h>
void main()
{
int n,i,j,k = 1;
printf( "Number of rows: ");
scanf( "%d", &n);
// Outer for loop to define the rows.
for (i = 1; i <= n; i++)
{
// Inner for loop for checking the value of j.
for (j = 1; j <= i; j++)
{
printf(" %2d ", k++);
}
printf( "\n");
}
return ;
}
Output
Number of rows: 5
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
In the above example, we have to print 5 rows of Floyds’s Triangle. For that, we use a nested for loop to print the triangle.
The first or the outer for loop will count using the variable i as 1 and will check the condition where i <= n. The second or the inner for loop works through j= 1 till j = i.
Program to print the Floyd's triangle using while loop
C
#include<stdio.h>
void main()
{
int n, i = 1, j = 1, k;
printf("Number of rows: ");
scanf("%d", &n);
printf("\n");
while(j <= n)
{
k = 1;
while(k <= j)
{
printf("%d ", i);
i++;
k++;
}
j++;
printf("\n");
}
return 0;
}
Output
Number of rows: 5
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
In this program we printed 5 rows of Floyd’s Triangle using nested while loops.
Program to print the Floyd's triangle using the Recursion function
C
#include <stdio.h>
// Declaring of global variables
int rows = 1;
int k = 1;
// Defining the function
void Floyd_triangle (int n)
{
int i;
if (n <= 0)
return;
for ( i = 1; i <= rows; i++)
printf( " %d", k++);
printf ("\n");
rows++;
Floyd_triangle (n - 1);
}
int main()
{
int n;
printf( " Number of rows: ");
scanf (" %d", &n);
// Calling Floyd_triangle function
Floyd_triangle( n);
return 0;
}
Output
Number of rows: 6
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
In this program, we printed 6 rows of Floyd’s Triangle using the recursion function and for loop to define the rows.
Program to reverse the Floyd's triangle using for loop
C
#include <stdio.h>
int main()
{
int n, i, j, k;
printf ("Number of rows: ");
scanf (" %d", & n);
//Formula to get the reverse Floyd's triangle
k = n * ( n + 1) / 2;
//Outer loop
for (i = n; i >= 0; i--)
{
//Checking the i condition
for (j = 1; j <= i; j++)
{
printf (" %d", k--);
}
printf ("\n");
}
return 0;
}
Output
Number of rows: 7
28 27 26 25 24 23 22
21 20 19 18 17 16
15 14 13 12 11
10 9 8 7
6 5 4
3 2
1
In this program, we formed Floyd’s Triangle in a reversed order using nested for loops.
Must Read C Program to Reverse a Number
Program to print the star Floyd's triangle using for loop
C
#include <stdio.h>
void main()
{
int n, i, j, k = 1;
printf( "Number of rows: ");
scanf( "%d", &n);
// outer for loop define the rows and check rows condition
for (i = 1; i <= n; i++)
{
// inner loop check j should be less than equal to 1 and print the data.
for (j = 1; j <= i; j++)
{
printf(" * ");
}
printf( "\n");
}
return ;
}
Output
Number of rows: 8
*
* *
* * *
* * * *
* * * * *
* * * * * *
* * * * * * *
* * * * * * * *
In this program, we made a Floyd’s Triangle using stars. We used nested for loops where the first or outer for loop will count using the variable i as 1 and will check the condition where i <= n. The second or the inner for loop works through j= 1 till j = i.
Must Read Passing Arrays to Function in C
Program to print the Alphabets Floyd's triangle in C using for loop
C
#include <stdio.h>
void main()
{
int n, i, j, k = 'A';
printf( "Number of rows: ");
scanf( "%d", &n);
for (i = 1; i <= n; i++)
{
for (j = 1; j <= i; j++)
{
printf(" %c", k);
k++;
}
printf( "\n");
}
return 0;
}
Output
Number of rows: 5
A
B C
D E F
G H I J
K L M N O
In this program, we made a Floyd’s Triangle using alphabets. We used nested for loops where the first or outer for loop will count using the variable i as 1 and will check the condition where i <= n. The second or the inner for loop works through j= 1 till j = I.
Also see, Short int in C Programming
Frequently Asked Questions
What are the conditions for Floyd's triangle?
Floyd's Triangle requires printing integers in a triangular pattern, where each row contains sequential integers starting from 1, with the number of integers increasing per row.
What is the Floyd's triangle problem?
The Floyd's Triangle problem involves generating a right-angled triangle of numbers where each row starts with the next integer in sequence, forming a triangular pattern with consecutive numbers.
How to print a Floyd triangle?
To print Floyd's Triangle, we can use nested loops: the outer loop for rows and the inner loop for printing numbers in each row, incrementing sequentially from 1.
Conclusion
In this article, we have extensively discussed the solution to print Floyd's Triangle in C along with its time and space complexity.
Until then, All the best for your future endeavors, and Keep Coding. "We hope that this blog has helped you enhance your knowledge regarding this problem, and if you would like to learn more, check out our articles on Code360. Do upvote our blog to help other ninjas grow.
38+ registered 