few questions to explain

[mr zdeis]

Hello.I am learning C++ and i don't wanna go any further beacuse I need some explanations.
1st:What is the difference between (increment): i++ and ++i
2nd:Could some1 explain functions scanf and printf

[Chewbob]

#include <iostream>
using namespace std;

int main()
{
    int a = 5;
    int b = 5;
    cout << ++a << endl;
    cout << b++ << endl;

    return 0;
}

The output from the above program would be:
6
5

When you prefix the increment, the value is incremented before it is included in the expression. When you postfix the increment, the variable's initial value is included in the expression.

int prefix(int& i) {
    i++;
    return i;
}

int postfix(int& i) {
    int temp = i;
    i++;
    return temp;
}

That would be the function equivalent (I think).

As for scanf and printf, I'm not too sure because I never use them.

[firedraco]

2.) Why are you using scanf() and printf() in C++...?

[Bazzy]

1:
http://www.cplusplus.com/doc/tutorial/operators/ - scroll down to Increase and decrease (++, --)

2:
http://www.cplusplus.com/reference/clibrary/cstdio/scanf/
http://www.cplusplus.com/reference/clibrary/cstdio/sprintf/