Programming Fundamentals Quiz

How can you manipulate arrays using pointers in C?

• Use pointers to directly modify array size

• Pass arrays to functions without pointers

• Dereference the pointer to access or modify array elements, use pointers to iterate through the array, access specific elements, or pass arrays to functions.

• Access array elements using strings

What are some common string manipulation functions in C?

• strcat()

• strrev()

• strchr()

• strlwr()

• strcpy(), strcat(), strlen(), strcmp(), strtok()

Explain the process of dynamic memory allocation for arrays in C.

• Dynamic memory allocation in C is done using static arrays only

• The process of dynamic memory allocation for arrays in C involves using functions like malloc, calloc, or realloc to allocate memory at runtime.

• Dynamic memory allocation in C involves using the free() function

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

What is the significance of pointers in programming?

• Pointers enable programmers to work with memory addresses directly, leading to more efficient and flexible code.

• Pointers are only used in outdated programming languages

• Pointers make programming languages more user-friendly

• Pointers are used to store large amounts of data in a single variable

How are functions used in programming and what is their purpose?

• Functions are used to create visual elements on a webpage.

• Functions are used to encapsulate a set of instructions for reuse and promote code reusability, modularity, and abstraction.

• Functions are used to increase the complexity of code.

• Functions are used to slow down the execution of a program.

What is the syntax for accessing array elements using pointers in C?

• *(arrayName - index)

• *(arrayName * index)

• *(index + arrayName)

• *(arrayName + index)

Name some functions used for string comparison in C.

• strcoll()

• stricmp()

• strncoll()

• strcmp(), strncmp(), strcasecmp(), strncasecmp()

How do you allocate memory dynamically for an array in C?

• Use the malloc() function in C to dynamically allocate memory for an array.

• Use the free() function in C to dynamically allocate memory for an array.

• Use the calloc() function in C to dynamically allocate memory for an array.

• Use the realloc() function in C to dynamically allocate memory for an array.

What is the difference between passing parameters by value and by reference in functions?

• Passing by value and by reference are the same in functions

• Passing by value creates a reference to the value, passing by reference creates a copy of the value

• Passing by value is faster than passing by reference in functions

• Passing by value creates a copy of the value, passing by reference passes the memory address of the value.

Explain the concept of pointer arithmetic in C.

• Pointer arithmetic in C is only applicable to pointers pointing to arrays.

• Pointer arithmetic in C involves multiplying pointers by constants to shift their position.

• Pointer arithmetic in C allows you to perform operations like addition, subtraction, increment, and decrement on pointers, which are then scaled based on the size of the data type they point to.

• Pointer arithmetic in C allows you to perform logical operations on pointers.