Sum of odd number & between two range in C language..

Sum of odd number between the two range number are given below….

Let’s understand some concept.

ODD Number..

Number which are not divided by 2 with 1 or 2 remainder is known as odd number.

Sum of odd Number. if you enter number then the sum done by this formula…If a=last term 100. Then n=a/2. So, x=n*n. OR if last term is odd then a={(n+1)/2}2.

Some important symbols used in code.

• () small bracket
• && use for ‘and’ use for address
• {} curly bracket
• “” double code

Sum of odd number by using formula…

1. #include<stdio.h>
2. #include<conio.h>
3. void main()
4. {
5. int a, b, c, d=0, e;
6. clrscr();
7. printf(“Enter the number find the Sum of odd number”);
8. scanf(“%d”, &a);
9. if(a%2==0)
10. {
11. b=a/2;
12. c=b*b;
13. printf(“%d”, c);
14. }
15. else if(a%2!=0)
16. {
17. b=a+1;
18. c=b*b;
19. d=c/4;
20. printf(“%d”, d);
21. }
22. getch();
23. }

Inputs..

If a=100 then

Results..

Sum= 2500.

Sum of odd number by using ‘for’ loop..

1. #include<studio.h>
2. #include<conio.h>
3. void main()
4. {
5. int a,b=0,c,d,i;
6. clrscr();
7. printf(“Enter the number to find out sum of odd number”);
8. scanf(“%d”, &a);
9. for(i=1;i<=a;i++)
10. {
11. if(i%2!=0)
12. b+=i;
13. }
14. printf(“%d”, b);
15. getch();
16. }

Inputs..

If a=100 then

Results..

Sum= 2500

Sum of odd number by using ‘while’ loop..

1. #include<studio.h>
2. #include<conio.h>
3. void main()
4. {
5. int a,b=0,c,i;
6. clrscr();
7. printf(“Enter the number to find out sum of odd number”);
8. scanf(“%d”, &a);
9. while(i<=a)
10. {
11. if(i%2!=0)
12. b+=i;
13. i++;
14. }
15. printf(“%d”, b);
16. getch();
17. }

Inputs..

If a=100 then

Results..

Sum= 2500

Sum of odd number by using ‘ do while’ loop..

1. #include<studio.h>
2. #include<conio.h>
3. void main()
4. {
5. int a,b=0,c,i;
6. clrscr();
7. printf(“Enter the number to find out sum of odd number”);
8. scanf(“%d”, &a);
9. {
10. do
11. {
12. if(i%2!=0)
13. b+=i;
14. i++;
15. }
16. while(i<=a);
17. printf(“%d”, b);
18. getch();
19. }

Inputs..

If a=100 then

Results..

Sum= 2500

Sum of odd number between two range number by using ‘for’ loop..

1. #include<studio.h>
2. #include<conio.h>
3. void main()
4. {
5. int a,b,c=0,d,i;
6. clrscr();
7. printf(“Enter the number to find out sum of odd number”);
8. scanf(“%d%d”, &a, &b);
9. for(i=a;i<=b;i++)
10. {
11. if(i%2!=0)
12. c+=i;
13. }
14. printf(“%d”, c);
15. getch();
16. }

Inputs..

If a=10, b=100 then

Results..

Sum= 2475..

Sum of odd number between two range number by using ‘while’ loop..

1. #include<studio.h>
2. #include<conio.h>
3. void main()
4. {
5. int a,b,c=0,i;
6. clrscr();
7. printf(“Enter the number to find out sum of odd number”);
8. scanf(“%d&d”,&a, &b);
9. i=a;
10. while(i<=b)
11. {
12. if(i%2!=0)
13. c+=i;
14. i++;
15. }
16. printf(“%d”, c);
17. getch();
18. }

Inputs..

If a=10, b=100 then

Results..

Sum= 2475..

Sum of odd number between two range number by using ‘do while’ loop..

1. #include<studio.h>
2. #include<conio.h>
3. void main()
4. {
5. int a,b,c=0,i;
6. clrscr();
7. printf(“Enter the number to find out sum of odd number”);
8. scanf(“%d&d”,&a, &b);
9. i=a;
10. do
11. {
12. if(i%2!=0)
13. c+=i;
14. i++;
15. }
16. while(i<=b);
17. printf(“%d”, c);
18. getch();
19. }

Inputs..

If a=10, b=100 then

Results..

Sum= 2475..