Arithmetic operators in C Programs

Arithmetic Operators
The primary arithmetic operators and their corresponding symbols in C are:
Multiplication *
Division /
Modulus %
Addition +
Subtraction –
When the / operator is used to perform integer division the resulting integer
is obtained by discarding (or truncating) the fractional part of the actual

floating point value. For example:
1/2 = 0
3/2 = 1
The modulus operator % only works with integer operands.
The expression a % b is read as “a modulus b” and evaluates to the remainder obtained after dividing
a by b. For example:
7 % 2 1
12 % 3 0

Increment or Decrement operators
In C, specialized operators have been set aside for the incrementing and decrementing of integer variables. The increment and decrement operators are ++ and -- respectively.
These operators allow a form of shorthand in C:
++i; is equivalent to i=i+1;
--i; is equivalent to i=i-1;

The above example shows the prefix form of the increment/decrement operators. They can also be used in postfix form, as follows:
i++; is equivalent to i=i+1;
i--; is equivalent to i=i-1;