Declarations and Initializations - C Programming Questions and Answers

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Discussion :: Declarations and Initializations

1 :	typedef long a; extern int a c;
2 :	typedef long a; extern a int c;
3 :	typedef long a; extern a c;

1 correct

2 correct

3 correct

1, 2, 3 are correct

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Answer : Option C

Explanation :

typedef long a;
extern int a c; while compiling this statement becomes extern int long c;. This will result in to "Declaration syntax error".

typedef long a;
extern a int c; while compiling this statement becomes extern long int c;. This will result in to "Too many types in declaration error".

typedef long a;
extern a c; while compiling this statement becomes extern long c;. This is a valid c declaration statement. It says variable c is long data type and defined in some other file or module.