Floyd's Triangle in C

What is a Floyd's Triangle
It is a pattern of numbers arranging in this format.
Format of numbers like
1
2 3
4 5 6
7 8 9 10

Program Code

#include<stdio.h>
#include<conio.h>

void main()
{
    int i,j,r;
    int num=0;
    clrscr();

    printf(“How many rows you want in the triangle:”);
    scanf(“%d”,&r);
   
    for(i=1;i<=r;i++)
    {
        for(j=1;j<=i;j++)
        {
            printf(“\t%d”,++num);
        }
        printf(“\n”);
    }
    getch();
}