for(int i=0;i<1;i++)

if(1){
DoThis();
}
else{
DoThat();
}

>>18
not using constant reference params
using braces for one-line conditionals
bool isEqual(const int &a, const int &b) {
    if (a == b)
        return true;
    else if (a != b)
        return false;
    else
        printf("Error");
}

bool isEqual(const int &a, const int &b) {
WHAT.THE.FUCK.

>>20
pass by value
pass by reference
LOOK.IT.UP.

>>21
I'm sorry I assumed it was C.

>>18,19
The error branch should also exit the process (or halt the machine in case you're making an OS), since it is obvious that if it's triggered, it must have been caused by a protection fault unless you're writing self-modifying code.
(I sincerely hope you're not writing non-self-modifying code and not protecting the memory.)

>>25

What is shared memory?

>>25

and What is operator overloading?

>>27
He is only comparing ints. You can't overload an operator of only primitive types.

>>28
Hell you can't, it is perfectly computable.

>>29
I suppose you can if you do stupid shit like
#define int MyOwnSuperGayType
but yeah, this discussion is becoming too pedantic. Why not make your own programming language while you're at it if you want to go full retard.