How can i find the sum of all odd number between a range.

#A program that finds the sum of all odd numbers between M to N.

1. #include<stdio.h>
2. #include<conio.h>
3. void main()
4. {
5. long long int i,m,n,sum;
6. clrscr();
7. FILE *p;
8. p=fopen("file5.txt","r");
9. fscanf(p,"%lld %lld",&m,&n);
10. for(i=m;i<=n;i++){
11. if(i%2==1)
12. printf(" %lld ",i);}
13. sum=0;
14. for(i=m;i<=n;i++){
15. if(i%2==1)
16. sum=sum+i;}
17. printf("\n\nSum of ODD numbers=%lld\n",sum);
18. getch();
19. }

// in Notepade  wirte m=10 and n=100 then save as file5.txt//

 RULES & output:
1.Program type:used by for loop and if.
2.Simple input:10-100
3.Simple output:11 13 15 17 19 21 23 ………………99.
 Sum=2475.