Sum of Even number & between two range in C language…

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

Let’s understand some concept.

Even Number..

Number which divided by 2 with 0 remainder is known as Even number.

Sum of even 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+1).

Some important symbols used in code.

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

Sum of even number by using formula…

If you Enter an Even number or odd number. This code for both case..

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

Inputs..

If a=100 then

Results..

Sum= 2550

Sum of even number by using ‘for’ loop…

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

Inputs..

If a = 100 then

Results..

Sum= 2550.

Sum of even number by using ‘while’ loop…

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

Inputs..

If a=100 then

Results..

Sum= 2550

Sum of even number by using ‘do while’ loop…

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

Inputs..

If a=100 then

Results..

Sum= 2550..

Sum of even number between the two range number by using ‘for’ loop…

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

Inputs..

If a=1 and b=100 then

Results..

Sum= 2550..

Sum of even number between the two range number by using ‘while’ loop…

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

Inputs..

If a=1 and b=100 then

Results..

Sum= 2550..

Sum of even number between the two range number by using ‘do while’ loop…

1. #include<stdio.h>
2. #include<conio.h>
3. void main()
4. {
5. int a,b,c=0,d,e;
6. clrscr();
7. printf(“Enter the to find sum of even number between two range number”);
8. scanf(“%d%d”, &a, &b);
9. c=a;
10. do
11. {
12. if(c%2==0)
13. {
14. d+=c;
15. c++;
16. }
17. }
18. while(c<=b);
19. printf(“%d”, d);
20. getch();
21. }

Inputs..

If a=1 and b=100 then

Results..