I'm confused to understand this code... Anyone help me... I'm first year student.

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/*A program to calculate the average of a set of N numbers in C - Langauge*/

C++

#define N 10
int main() 
{
    int count;
    float sum, average, number;
    sum = 0;
    count = 0;
    
    while(count<n)
    {
        scanf("%f", &number);
        sum += number;
        count = 1;
    }
    average = n;
    printf("n="%d", sum);
    printf("average="%f"," average);
    return 0;
}

What I have tried:

please explain this code clearly, my professor explained in class but, not understand.
So, any expert please explain this code very clearly, please...
Thank you...

Posted 16-Nov-19 21:41pm

Member 14657607

Updated 17-Nov-19 0:24am

OriginalGriff

v2

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3 solutions

Solution 2

I'm not going to explain that, because it won't work: it doesn't show you the average of the entered values, even if it compiled, which it won't: C is case sensitive, so "N" is not the same as "n". And if it never gets out of your while loop, that's probably going to be a problem as well ...

An Average is defined - you know this - as the sum of the elements divided by the number of elements. So your code - if fixed - has a loop to collect the elements and add them all together, which produces the sum of the elements.
You know the number of elements - N - so the average is simple to work out: sum / N

Fix the compilation errors, add the actual calculation, and use the debugger to follow the code through and see what exactly is going on when it runs.

Posted 16-Nov-19 22:41pm

OriginalGriff

Solution 3

The best is to try the code yourself. Download Visual Studio and create a project and copy that code into it.

This Learn C++ tutorial has also some good chapters about the usage of Visual Studio and its integrated debugger.

Have a lot of fun by reviewing the first code in your career! Good luck! :-)

Posted 16-Nov-19 22:45pm

KarstenK

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Daniel Pfeffer · Accepted Answer · 2019-11-16T22:35:00

The best way to understand a short segment of code is to "play computer":

1. Write down the variables used and their initial values (if any)
2. "Execute" each instruction in turn, updating the values of any variables changed
3. Remember to "loop" when you reach the closing bracket of a while / do .. while / for statement

This code is very simple; it should not take you too long to figure it out.

Good luck!