C Programming - Typedef
Exercise : Typedef - Yes / No Questions
- Typedef - General Questions
- Typedef - Find Output of Program
- Typedef - Point Out Errors
- Typedef - Yes / No Questions
1.
Is the following declaration acceptable?
typedef long no, *ptrtono;
no n;
ptrtono p;
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;
Answer: Option
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;
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.
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