Write a program to generate a following numbers triangle:

(Where user entered number through keyboard, for example if num=5).

      

				1
			1	2
		1	2	3
	1	2	3	4
1	2	3	4	5

Ans.

/*c program for number triangle pyramid*/

#include<stdio.h>

#include<conio.h>

int main()

{

 int num,r,c,sp;

 printf("Enter loop repeat number(rows): ");

 scanf("%d",&num);
 for(r=1; num>=r; r++)

 {

  for(sp=num-r; sp>=1; sp--)

     printf(" ");

  for(c=1; c<=r; c++)

     printf("%d",c);

  printf("\n");

 }
 getch();

 return 0;

} 

/*************OUTPUT****************
Enter loop repeat number(rows): 5

				1
			1	2
		1	2	3
	1	2	3	4
1	2	3	4	5

************************************/