Moddle Quiz III

What is an array of structures in C?

• An array of structures in C is a loop in C++

• An array of structures in C is a collection of integers

• An array of structures in C is an array where each element is a structure.

• An array of structures in C is a data type in Python

How do you declare a pointer to a structure in C?

• struct Person ptr;

• Person.ptr;

• struct Person *ptr;

• Person *ptr;

Explain sequential access file handling in C.

• Sequential access file handling in C involves reading data randomly from a file

• Sequential access file handling in C involves reading or writing data in a file sequentially, one after the other. This means data is processed in the order it appears in the file, without random access. Functions like fopen, fclose, fread, and fwrite are commonly used for sequential file handling in C.

• Functions like fopen, fclose, fread, and fwrite are not used for sequential file handling in C

• Sequential access file handling in C allows for processing data in any order

What is a random access file in C?

• A random access file in C only allows for reading data from the beginning of the file

• A random access file in C can only be used for reading data, not writing

• A random access file in C can only read or write data sequentially, not at any position

• A random access file in C allows for reading and writing data at any position within the file.

List some common file operations in C.

• open, read, write, close, seek

• delete

• load

• copy

How do you handle command line arguments in C?

• Use argc and argv parameters of the main function.

• Use a separate function to handle command line arguments.

• Use getopt function to parse command line arguments.

• Use argc and argp parameters of the main function.

What is a union in C?

• A union in C is a type of clothing brand

• A union in C is a type of coffee shop

• A union in C is a user-defined data type that allows storing different data types in the same memory location.

• A union in C is a type of mathematical operation

Explain dynamic memory allocation in C.

• Dynamic memory allocation in C is a compile-time process.

• Dynamic memory allocation in C is achieved by directly manipulating the stack.

• Dynamic memory allocation in C is done using functions like print, scan, and loop.

• Dynamic memory allocation in C is achieved using functions like malloc, calloc, realloc, and free to allocate memory on the heap during program execution.

How do you access elements in an array of structures in C?

• Using the exclamation mark (!)

• Using the dot operator (.)

• Using the hashtag (#)

• Using the semicolon (;)

What is the purpose of using pointers to structures in C?

• To increase the complexity of the code

• To reduce the memory usage

• To simplify the debugging process

• To efficiently access and manipulate complex data structures by allowing direct memory address referencing.