Compiler Warning (level 4) C4218
nonstandard extension used: must specify at least a storage class or a type
With the default Microsoft extensions (/Ze
), you can declare a variable without specifying a type or storage class. The default type is int
.
Example
// C4218.c
// compile with: /W4
i; // C4218
int main()
{
}
Such declarations are invalid under ANSI compatibility (/Za).
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