Operators
If we analyze the following sentence:
var1 = var2 + var3;
we are telling the program, through the operator +, to compute
the sum of the value of two variables, and once this is done assign
the result to another variable var1. This last operation (assignment)
is indicated by another operator, the sign =.
The C language has a wide variety of operators, and all of them
fall into 6 categories, namely: arithmetic, relational, logical,
increment and decrement, bit manipulation and assignment. All
of them will be described in the subsequent paragraphs.