Write a program to generate the triangular number

Write a program to generate the triangular number.

Note: Triangular number is nothing but summation of 1 to given number. For example, when entered number is 5, its triangular number would be (1+2+3+4+5)=15

# include <stdio.h>
# include <conio.h>
void main()
{
int n,j,tri_num=0;
clrscr();
printf(“What Triangular number do you want :”);
scanf(“%d”,&n);
for(j=1;j<=n;++j)
{
tri_num=tri_num+j;
printf(“Triangular number of 5 is %d”,tri_num);
}
getch();
}

OUTPUT:

What Triangular number do you want? : 5

Triangular number of 5 is 15