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Void
In C, there's a special type for function signatures: void. There are two primary ways you'll use void:
To explicitly state that a function takes no arguments:
int get_integer(void) {
return 42;
}
When a function doesn't return anything:
void print_integer(int x) {
printf("this is an int: %d", x);
}
It's important to note that void in C is not like None in Python. It's not a value that can be assigned to a variable. It's just a way to say that a function doesn't return anything or doesn't take any arguments.