How to Do ( average ) By using the While Loop ?? (( C Language ))

[Girl 24]

Hello all,

Please I have a Question !

I have to do this Question in my college :

I must do a program in C Language . They want me to add 5 numbers then cumpute the average by using while loop !

How to solve it ?

I know how to compute the average by another way , but in this Question they need to do it by while loop .

Please help me.

and thank you all.


Best regards,
Girl 24

[NMTop40]

We don't do homework here. You need to try it yourself and show us some code before we will help you.

You said that the specification is 5 numbers. The structure of a while loop is that it ends when the condition is false, although it can also be terminated early. Thus:

while ( condition )
{
  do_stuff
}

You should therefore choose your condition such that it will be false once 5 numbers have been entered. To do this you will need to modify something in the loop such that having entered 5 numbers the condition becomes false.

This might be one way:

int remaining_numbers = 5;
while ( remaining_numbers > 0 )
{
  get_a_number_and_do_stuff();
  --remaining_numbers;
}

I will now leave it to you to write the proper code.

[Girl 24]

We don't do homework here. You need to try it yourself and show us some code before we will help you.

Aww . Do you think that Iam lazy and want some one to solve it ? . No Iam not. I solve all my homework questions, but this one I stopped and I tried to do it but I didn't reach the right way.

Thank you for helping me . Yes you are right. I did what you say. here it is :

#include <stdio.h>
main ()
{
float num,avg,sum;
int i;
i = 5;
sum = 0;
while ( i > 0 )
{
printf("Enter a number");
scanf("%f",&num);
sum = sum + num;
--i;
}
avg = sum / 5;
printf("The average =%f",avg);
}



Thank you NMTop40

Best regards,
Girl 24

[exterminator]

Hey, Girl! Welcome to CG!

main ()

It should be int main().

i = 5;

You can remove this limitation by asking the user to enter the count of numbers he wants to calculate the average for. using scanf as you did for individual numbers.

[NMTop40]

Aww . Do you think that Iam lazy and want some one to solve it ? . No Iam not. I solve all my homework questions, but this one I stopped and I tried to do it but I didn't reach the right way.

Thank you for helping me . Yes you are right. I did what you say. here it is :

#include <stdio.h>
main ()
{
 float num,avg,sum;
 int i;
 i = 5;
 sum = 0;
 while ( i > 0 )
 {
  printf("Enter a number");
  scanf("%f",&num);
  sum = sum + num;
  --i;
  }
  avg = sum / 5;
  printf("The average =%f",avg);
  }

Thank you NMTop40

Best regards,
Girl 24

For someone learning C that is not bad. Just a couple of little things:

- use int as the return type for main() although I think having no return type (explicit int) make be allowable in C (even though it isn't in C++).

- You may initialise your variables on the lines on which they are declared. So

float sum=0.0;

- Preferable to use variables that have a meaning, so nums_remaining (even though it is a bit more typing) instead of i.

- You might want a few spaces and new lines in your output.

Also when you post code on codeguru forums, enclose it in code tags, that is, begin with [ code ] and end with [ /code ] (but without the spaces).

[Girl 24]

WoOoOW . you are perfect !

Thank you exterminator and NMTop40.

Your notes are very perfect and Iam so happy. thanks alot alot alot.


Best regards,
Girl 24