When should a type cast be used?
Submitted by: AdministratorThere are two situations in which to use a type cast. The first use is to change the type of an operand to an arithmetic operation so that the operation will be performed properly.
The second case is to cast pointer types to and from void * in order to interface with functions that expect or return void pointers. For example, the following line type casts the return value of the call to malloc() to be a pointer to a foo structure.
struct foo *p = (struct foo *) malloc(sizeof(struct foo));
Submitted by: Administrator
The second case is to cast pointer types to and from void * in order to interface with functions that expect or return void pointers. For example, the following line type casts the return value of the call to malloc() to be a pointer to a foo structure.
struct foo *p = (struct foo *) malloc(sizeof(struct foo));
Submitted by: Administrator
Read Online C Programming Job Interview Questions And Answers
Top C Programming Questions
| ☺ | Why does this code crash? |
| ☺ | What is wrong with this declaration? |
| ☺ | How can I read/write structures from/to data files? |
| ☺ | What does static variable mean in c? |
| ☺ | How can I increase the allowable number of simultaneously open files? |
Top Coding/Programming Categories
| ☺ | Python Interview Questions. |
| ☺ | OOP Interview Questions. |
| ☺ | Software engineering Interview Questions. |
| ☺ | PHP Interview Questions. |
| ☺ | VBA (Visual Basic for Applications) Interview Questions. |
