1.5 KiB
1.5 KiB
Compilation Steps
- Preprocessing: The preprocessor obeys commands that begin with #, also known as directives Commands for the preprocessor are called directives. Directives begin with a pound sign, and they do not end with a semicolon.
Example:
#include <stdio.h>
- Compiling. A compiler translates then translates the program into machine instructions.
- Linking: The generated objects are combined to create a complete executable.
The preprocessor is typically integrated with the compiler.
Types
Strings
A string literal is characters enclosed in double quotation marks.
A newline can be inserted using \n.
Integers
An integer is a way to store a whole number. In C, integers are signed by default.
Floats
A float is a decimal value. Slower arithmetic and inexact values are both drawbacks of using floats.
Variables
A variable must be declared before it is assigned.
Formatting specifiers
| Specifier | Function |
|---|---|
%d |
Display an integer |
%f |
Display a float. Specify the number of places to round to by adding a decimal and a number, eg %.2f would round to two decimal places. |