Programming in C Lab quiz II

What is a pointer in C?

• A pointer in C is a variable that stores the memory address of another variable.

• A pointer in C is a data type that stores multiple values

• A pointer in C is a function that returns a memory address

• A pointer in C is a keyword used to declare constants

How do you handle files in C?

• Delete files directly without closing them

• Use Python instead of C

• Print files to the console instead of reading/writing

• Include , open file with fopen(), read/write with functions like fscanf(), fprintf(), fread(), fwrite(), and close file with fclose().

Explain the concept of functions in C.

• Functions in C do not have a return type.

• Functions in C are blocks of code that perform a specific task. They are reusable and modular, allowing for better organization and easier debugging. Functions in C have a return type, a name, parameters, and a body where the actual code is written.

• Functions in C cannot have parameters.

• Functions in C are used for decorative purposes only.

What are arrays in C?

• Arrays in C can only store primitive data types and not complex objects.

• Arrays in C are limited to a fixed number of elements and cannot be resized.

• Arrays in C are a collection of elements of the same data type stored in contiguous memory locations.

• Arrays in C are a collection of elements of different data types stored in non-contiguous memory locations.

How do you perform dynamic memory allocation in C?

• Dynamic memory allocation is not possible in C

• Declare a static array with a large size to allocate memory

• Use functions like malloc, calloc, or realloc to allocate memory during runtime and free the memory using the free function.

• Use functions like free, allocate, or reserve to allocate memory

What is the significance of command line arguments in C?

• They provide a way to customize program behavior without modifying the source code.

• They allow the program to run faster

• They are used for debugging purposes only

• They are only used in object-oriented programming languages

What is the syntax for declaring a pointer in C?

• int ptr*;

• int *ptr;

• int* ptr;

• int ptr;

How do you open a file in C?

• Use the close() function in C.

• Use the fopen() function in C.

• Use the open() function in C.

• Use the read() function in C.

What is the purpose of return statement in a function?

• To stop the execution of the function

• To define the function parameters

• To specify the value that the function should output when called.

• To add comments within the function

How do you access elements in an array?

• array(index)

• array{}index

• array[index]

• array.index