Allow to declare variables before they are used in new written code.
Signed-off-by: José Expósito <jose.exposito89@gmail.com>
- if it generates a static checker warning, it needs to be fixed or
commented
-- declare variables at the top, try to keep them as local as possible.
+- declare variables before they are used, try to keep them as local as possible.
Exception: if the same variable is re-used in multiple blocks, declare it
at the top.
Exception: basic loop variables, e.g. for (int i = 0; ...)
```c
int a;
-int c;
if (foo) {
int b;
- c = get_value();
- usevalue(c);
+ a = get_value();
+ usevalue(a);
}
if (bar) {
- c = get_value();
- useit(c);
+ a = get_value();
+ useit(a);
}
+
+int c = a * 100;
+useit(c);
```
- do not mix function invocations and variable definitions.