Write a program to implement the Fibonacci series

this is a program in C for accessing the Fibonacci series
#include<stdio.h>
int main()
{
    unsigned int i=0,j=0,sum=1,num;
    printf("nEnter the limit for the series ");
    scanf("%d",&num);
    while(sum<num)
    {
       printf("%d ",sum);
        i=j;
        j=sum;
        sum=i+j;
                      
    }
   
  
  getch();  
}