DAY 9 File Handling & Dynamic Memory Allocation - 20th JUNE 24

What is the primary function of fopen() in C programming?

• To open a file for reading

• To allocate memory dynamically

• To close a file

• To delete a file

Which mode in fopen() allows both reading and writing to a file without truncating it?

• "r"

• "w"

• "a"

• "r+"

How do you close a file in C using fclose()?

• fclose(file);

• close(file);

• closeFile(file);

• file.close();

What will feof() return when the end of file is reached in C?

• 0

• 1

• -1

• NULL

How do you read a character from a file in C using fgetc()?

• fgetc(file);

• readChar(file);

• getChar(file);

• file.getc();

Which function is used to dynamically allocate memory in C?

• malloc()

• allocate()

• new()

• calloc()

What will malloc() return if it fails to allocate memory?

• NULL

• -1

• 0

• 1

How do you allocate memory for an integer variable in C using malloc()?

• malloc(sizeof(int));

• malloc(sizeof(int*));

• malloc(int);

• malloc(int*);

How do you release dynamically allocated memory in C using free()?

• releaseMemory(ptr);

• deleteMemory(ptr);

• free(ptr);

• delete(ptr);

What does calloc() do in C programming?

• Allocates memory and initializes it to zero

• Allocates memory without initialization

• Frees allocated memory

• Resizes allocated memory