Expressions in C++ are similar to math but...

in math, you can omit the multiplication operator

xy means x times y

the multiplication operator is represented by "*"

x*y means x times y

in math you can use a bar to indicate divisions

in math	in C++
1
--------	1/(x+1)
x + 1

In math, we don't usually differentiate integer and float:

1/2 is zero ... 1./2. is 0.5

In C++ equal sign means: make this variable equal to ...

x=x+1; x+1=x does not exist!

In C++ there are no [ ] or { } for expressions, only () !