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Fixed formatting and typos (#24209)

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blankaex
2018-11-15 01:23:04 +10:00
committed by Aditya
parent a211bee4ad
commit e2e460c19e
1 changed files with 4 additions and 8 deletions
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12
guide/english/c/macros/index.md
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@ -3,10 +3,9 @@ title: Macros in C
---
## Macros in C
A macro is a piece of code with a given name. When the name is used, it is replaced by the content of the macro.
A macro is a piece of code with a given name. When the name is used, it is replaced by the content of the macro. The `#define` keyword is used to define new macros. It's followed by a name and a content. By convention, macro names are written in uppercase. There are two type of macros: `Object-like` macros and `Function-like` macros.
#### Defining macros
The `#define` keyword is used to define new macros. It's followed by a name and a content. By convention, macro names are written in uppercase.
#### Object-like Macros
```C
#define PI 3.14
```
@ -27,11 +26,8 @@ just Type
```
This is used to use macros only for specific lines of code and again undefine it.
#### Types of macros
There are two type of macros. The `Object-like` macros, showed above, and the `Function-like` macros.
#### Function-like Macros
Function-like uses the same `#define` keyword. The difference is that you use a pair o parentheses after the function name.
Function-like uses the same `#define` keyword. The difference is that you use a pair of parentheses after the function name.
```C
#define hello_world() printf("Hello World!")
```
@ -51,7 +47,7 @@ Now calling:
```C
hello("World");
```
You get the equivallent of:
You get the equivalent of:
```C
printf("Hello World!");
```