mikroC

making it simple...

mikroC - C Compiler for Microchip PIC microcontrollers

Binary Arithmetic Operators

Division of two integers returns an integer, while remainder is simply truncated:

/* for example: */

7

/

4;

// equals 1

7

*

3 / 4;

// equals 5

/* but: */

7.* 3./ 4.; // equals 5.25 as we are working with floats

Remainder operand % works only with integers; sign of result is equal to the sign of first operand:

/* for example: */

 

9

%

3;

//

equals

0

7

%

3;

//

equals

1

-7

%

3;

//

equals

-1

We can use arithmetic operators for manipulating characters:

'A' + 32;// equals 'a' (ASCII only)

'G' - 'A' + 'a'; // equals 'g' (both ASCII and EBCDIC)

Unary Arithmetic Operators

Unary operators ++ and --are the only operators in C which can be either prefix (e.g. ++k, --k) or postfix (e.g. k++, k--).

When used as prefix, operators ++ and --(preincrement and predecrement) add or subtract one from the value of operand before the evaluation. When used as suffix, operators ++ and --add or subtract one from the value of operand after the evalu- ation.

For example:

int j = 5; j = ++k;

/* k = k + 1, j = k, which gives us j = 6, k = 6 */

int j = 5; j = k++;

/* j = k, k = k + 1, which gives us j = 5, k = 6 */

 

 

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