floyd's_triangle.c

#include<stdio.h>
int main()
{
	int i,j,rows,num=1;
	printf("Enter the number of rows");
	scanf("%d",&rows);
	for(i=1;i<=rows;i++)
	{
		for(j=1;j<=i;j++)
		{
			printf("%3d",num);
			num++;
		}
		printf("\n");
	}
	return 0;
}