How to test is a string is initialized in c?

Question

Quick and easy C question: `char* foo` How can I test if `foo` hasn't still been assigned a value? Thanks.

Accepted Answer

You can't.

Instead, initialize it with `NULL` and check whether it is `NULL`:

```
char *foo = NULL;
...
if(!foo) { /* shorter way of saying if(foo == NULL) */
```

Solution