Write a c program for Floyd's triangle.

//Write a c program for Floyd's triangle.

#include<stdio.h>

int main(){

  int i,j,r,k=1;

  printf("Enter the range: ");
  scanf("%d",&r);

  printf("FLOYD'S TRIANGLE\n\n");
  for(i=1;i<=r;i++){
      for(j=1;j<=i;j++,k++)
           printf(" %d",k);
      printf("\n");
  }

  return 0;
}

Sample output:
Enter the range: 10
FLOYD'S TRIANGLE

1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55