[C++] need someone to explain the code inside!

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October 12th, 2012, 09:56 PM

lie_soul

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Join Date: Sep 2012

Posts: 7

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[C++] need someone to explain the code inside!

Hello,

I'm new to c++ and i need someone to help me explain the code below;

Code:

#include <iostream>
using namespace std;
int main()
{ 
int num =6;
cout << "Enter an integer number: ";
cin >> num;
for(int p=1; p<=num; p = p + 3)
{ 
cout << p << endl;
} 
}

i know whats the output when i enter any int number.. but i just wanted to know .. the way it work..

for example.. when i enter 12 i will get numbers as result.. but i need to know whats happen inside the code..

also if i change this code below;

Code:

for(int p=1; p<=num; p = p + 3)

Code:

for(int p=num; p > 0; p = p - 4)

I'll get different answers for sure.. but wanted to know the way this program works and how the program manage the user inputs..

Thanks

October 13th, 2012, 04:09 AM

bdb

Contributing User

Join Date: Aug 2012

Posts: 156

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Use your debugger and follow your code running and your variables changing statement by statement.
Have fun!

October 14th, 2012, 01:50 AM

redsumac

Registered User

Join Date: Oct 2012

Posts: 8

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Quote:

Originally Posted by lie_soul

Hello,

I'm new to c++ and i need someone to help me explain the code below;

Code:

#include <iostream>
using namespace std;
int main()
{ 
int num =6;
cout << "Enter an integer number: ";
cin >> num;
for(int p=1; p<=num; p = p + 3)
{ 
cout << p << endl;
} 
}

Code:

for(int p=1; p<=num; p = p + 3)

Code:

for(int p=num; p > 0; p = p - 4)

I'll get different answers for sure.. but wanted to know the way this program works and how the program manage the user inputs..

Thanks

The second one means if p is greater than 0, p is equal to p minus 4. If you enter 10, which is greater than 0, p=10-4, or 6. Is that what you are asking?

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