for (i = 0; i < 10; i++) a[i] = 0;
Notice that i goes from 0 to 9. It is very important that you stay within the 'bounds' of the array. Compilers don't usually catch errors like: a[10] = 0; and they can have very destructive results.
variable_type array_name [ size ];
int my_array [] = {1, 5, 8, 23, 56, 2, 9, 5, 8};
#define some_name replacement_textFor example, if you use the following syntax to define the size of an array in your code. This statement goes right after the #include statements:
#define SIZE 100And then in your main function, you could define the array with this code:
int my_array[SIZE];The text 'SIZE' will be replaced with '100' before the program compiles. While the basic usage of #define is fairly straightforward, there are a couple of things to watch out for:
int my_array[10] = {0};