Array variables have same data type (#23142)

An array is a set of homogeneous data. It's important to note that the variables in an array are always of the same data type.

guide/english/c/arrays-and-strings/index.md

@@ -65,7 +65,7 @@ int main(void) {
 ```
 
 ## Strings
-Arrays are sets of variables, and strings are sets of characters. As a result, we can represent strings with an array. You _can_ declare something in the same way as before, but you'll need to place '\0' as one of your values (more on that in a minute!):
+Arrays are sets of variables of the same data type, and strings are sets of characters. As a result, we can represent strings with an array. You _can_ declare something in the same way as before, but you'll need to place '\0' as one of your values (more on that in a minute!):
 ```C
 char hello_world[] = {'H', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd', '!', '\0'};
 ```