what's wrong with this c++ code?

[slick086]

include<iostream>
using namespace std;

int main ()
{
int number;
cout<<"Enter Number"<<"\n"; cin>>number; cout<<"\n";

int count=0;int sum=0;
while(count<=number){
cout<<count<<"\n";
sum = sum + ((number+1)*number) - count;
count++;}
cout<<sum<<"\n";
return 0;
}

say 5 was entered by a user the code should produce the following result: (5+4+3+2+1+0=15)

[green_meklar]

include<iostream>

is wrong. It should be

#include <iostream>

Also try separating the declarations of count and sum onto two different lines, and the cin and cout (just below the line where number is declared) onto two different lines. It's better style and it might be necessary for some, if not all, compilers.

I don't see why you use this, though:

sum = sum + ((number+1)*number) - count;

You should just replace that with:

sum = sum + count;

Finally, add this just before the 'return 0;' line:

cin.get();

Compile the code with all the above changes and run it. If it closes the console window automatically before you can see the output, add another cin.get(); below the first one, then compile and run again. It should work.

[dalcinshady]

first off, your code is very messy. You should always put new statements on new lines.

include<iostream>
using namespace std;

int main ()
{
int number;
cout<<"Enter Number"<<"\n";
cin>>number; cout<<"\n";

int count=0;
int sum=0;

while(count<=number){
cout<<count<<"\n";
sum = sum + ((number+1)*number) - count;
count++;}

cout<<sum<<"\n";
return 0;

Much easier to read.

Now some changes to make.

include<iostream>
using namespace std;

int main ()
{
int number;

cout<<"Enter Number"<<"\n"; // instead of using \n you can use the 'endl' object. Or if you wanted to use \n, then use it the correct way. You should do cout << "Enter Number\n"; instead.

cin>>number;

cout<<"\n"; // once again. cout << endl;

int count=0;
int sum=0;

while(count<=number){
cout<<count<<"\n";
sum = sum + ((number+1)*number) - count;
count++;} // Here you want to add 5 and repeat that decreasing by 1 each time. Your code is a bit sloppy. There is an easier way. You should put 'sum += number-count;'. Much easier isn't it? The += operator is just adding the value of 'number-count' to sum.

cout<<sum<<"\n"; // cout << sum << endl;
return 0;

[Kami Dalton]

int count=0;int sum=0;
while(count<=number)
{
cout<<number<<"+";
sum = sum + number - count;
count++;
}
cout<<"="<<sum<<"\n";
return 0;
}