fixed .md output on github

1 files changed, 10 insertions, 9 deletions

diff --git a/01-13.md b/01-13.md
index 2441c7f..2f805cb 100644
--- a/01-13.md
+++ b/01-13.md
@@ -11,24 +11,24 @@ Notes 01/13/2020
 - The pointer `*px` is "pointing" to the memory address where x is located (`&x`)
 - The pointer must be assigned a data type (in this case `int`) that matches the memory type that it is pointing to
 
-
+```
 	x = 5;
 	*px = 1
 	printf("%d", x);
-
+```
 
 - The code above will print `1` because `*px` (the value in the memory address that px is pointing to) was changed to 1, so x was changed to 1
 - You can change where the pointer is pointing to: `px++` changes the pointer to point to the next memory address
 	- This is useful when dealing with arrays:
 
-
+```
 	int x[5] = {1, 2, 3, 4, 5}
 	int *px;
 	px = &x[0]; //can also be written px = x
 	printf("%d", *px);
 	px++;
 	printf("%d", *px);
-
+```
 
 The code above would print `1` and then `px++` would move the pointer to point to `x[1]` and the second number printed would be `2`
 
@@ -112,26 +112,27 @@ The above code would print `STRING!`
 - A function can also receive an array as an argument in the form of a pointer
 	- For Example:
 
-
+```
 	void my_function(char *c){
 		...
 	}
-
+```
 
 - The function would receive a memory address pointing to a char. It would be beneficial to pass a memory address pointing to a string. 
 	- Let's flesh-out the example:
 
-
+```
 	void my_function(char *c){
 		printf("%s\n", *c);
 		c++;
 		printf("%s\n", *c);
 	}
-
+```
 
 - Let's say we pass a memory address `&my_string[0]` and my_string is defined as `char my_string[] = "Hello World"`
 	- The code would output:
 
-
+```
 	Hello World
 	ello World
+```