C Programming - Complicated Declarations - Discussion
Discussion Forum : Complicated Declarations - General Questions (Q.No. 12)
12.
What do the following declaration signify?
int (*ptr)[30];Discussion:
14 comments Page 1 of 2.
Bishop said:
9 years ago
int *ptr[30]; //an array of 30 pointers (equivalent: int* ptr[30];).
int (*ptr)[30]; //a pointer to an array of 30 elements (int).
int *(*ptr)[30]; //a pointer to an array of 30 pointers (equivalent: int* (*ptr)[30];).
int (*ptr)[30]; //a pointer to an array of 30 elements (int).
int *(*ptr)[30]; //a pointer to an array of 30 pointers (equivalent: int* (*ptr)[30];).
Ritesh anand said:
1 decade ago
Friends its a very simple one. int (*ptr) is nothing but a ptr which points to some single integer value.
Now int (*ptr)[30] is something interesting here u are declaring not one pointer to point some integer value.
Here you are declaring 30 pointers to point some integer values and these 30 pointers are stored in array and that's why int (*ptr)[30] is an array of 30 integer pointers.
Now int (*ptr)[30] is something interesting here u are declaring not one pointer to point some integer value.
Here you are declaring 30 pointers to point some integer values and these 30 pointers are stored in array and that's why int (*ptr)[30] is an array of 30 integer pointers.
Jegadees said:
1 decade ago
Pointer array concept
Ferozee said:
1 decade ago
Pointer Array Concept i.e., *p[30] is pointer Array,means *p points to 30 integers of an Array.
Anil said:
1 decade ago
int (*ptr)[30]=pointer to array of 30 integers;
int *ptr[30]=ptr is an array of 30 integer pointer
int *ptr[30]=ptr is an array of 30 integer pointer
Arjun Prasad said:
1 decade ago
In answer A:- it should be 30 "integers" instead of "integer pointers", then A correct.
Vikas Sharma said:
1 decade ago
It should be "pointer to an array of 30 integers"
Nitin said:
1 decade ago
ptr is a pointer to an array of 30 integers.
Sara said:
1 decade ago
satya is rite..
Satyakala said:
1 decade ago
Here (*ptr)[30] means it is an pointer to array of 30 integers not 30 integer pointers because it is not array of pointers.
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