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Floyd's triangle in C

C program to print Floyd's triangle: a user inputs how many rows of the triangle to print. The first four rows of Floyd's triangle are:
1
2 3
4 5 6
7 8 9 10
In Floyd's triangle, the nth row contains n numbers.

C program to print Floyd's triangle

#include <stdio.h>

int main()
{
  int n, i,  c, a = 1;

  printf("Enter the number of rows of Floyd's triangle to print\n");
  scanf("%d", &n);

  for (i = 1; i <= n; i++)
  {
    for (c = 1; c <= i; c++)
    {
      printf("%d ",a);
      a++;
    }
    printf("\n");
  }

  return 0;
}

Output of program:
Floyd triangle C program output

Download Floyd triangle program.

C program to print Floyd's triangle using recursion

#include <stdio.h>
 
void print_floyd(int);
 
int main()
{
  int n;
 
  printf("Input number of rows of Floyd's triangle to print\n");
  scanf("%d", &n);
 
  print_floyd(n);
 
  return 0;
}
 
void print_floyd(int n) {
  static int row = 1, c = 1;
  int d;

  if (n <= 0)
    return;
 
  for (d = 1; d <= row; ++d)
    printf("%d ", c++);
   
  printf("\n");
  row++;

  print_floyd(--n);
}

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