Program to calculate sum of cubic series using while loop without power function in C.

Code Box
--------------------------------------------

/*program to calculate sum of the series 
(1*1*1)+(2*2*2)+(3*3*3)+(4*4*4)+.......+(n*n*n).
cube number series. 
without using power function.
where n is the limit entered by user.
*/

#include<stdio.h>
#include<conio.h>
void main()
{
int i,sum,num;

clrscr();

sum=0;

printf("\nEnter limit : ");
scanf("%d",&num);

printf("\nCubic Number Series ");

printf("\nSeries= ");

i=1;           //initialization

while(i<=num)
{
sum=sum+(i*i*i);
printf("+ (%d*%d*%d)",i,i,i);

i++;           //increment post fix operator 

}

printf("\n\nSum of series= %d",sum);

getch();
}