C Programming - Typedef

Exercise :: Typedef - Yes / No Questions

1. 

Is the following declaration acceptable?

typedef long no, *ptrtono;
no n;
ptrtono p;

A. Yes
B. NO

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

2. 

Is there any difference in the #define and typedef in the following code?

typedef char * string_t;
#define string_d char *;
string_t s1, s2;
string_d s3, s4;

A. Yes
B. No

Answer: Option A

Explanation:

In these declarations, s1, s2 and s3 are all treated as char*, but s4 is treated as a char, which is probably not the intention.

3. 

Are the properties of i, j and x, y in the following program same?

typedef unsigned long int uli;
uli i, j;
unsigned long int x, y;

A. Yes
B. No

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

4. 

typedef's have the advantage that they obey scope rules, that is they can be declared local to a function or a block whereas #define's always have a global effect.

A. Yes
B. No

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.