In a ssignment statment the value on left of the equal sign is always equal to value of the right? Why ?

Answer 1

With assignment statment we assign the value of the right expreisson to the variable on the left of the '=' sign.

thus, this mean that the value of the left side is always equal to that of the right side.

Answer 2

tip: to avoid misassignment when comparing values (using ==) with functions I write my if statements backwards to that of the usual convention to avoid misassignment of data because a missing =

example normal ( can be a hard to find error )
a = 5;
int SomeFunction();
if(a == SomeFunction()) {
// misassignment because of missing =
// if(a = SomeFunction())
// do magics
}

safe way ( misassignment will detected at compile)

if(SomeFunction() == a) {
// if(SomeFunction() = a)
// do magics
}

note: this method won't help when just comparing two local variables (such as two ints or two chars) as both are usually writable.

I feel it is a useful thing to do. (I have been caught out by this and it was very frustrating to find that I had simply missed an = sign in my haste). others may disagree but thems the breaks I guess.