In managing automated test suites, what does a 'test suite' primarily consist of?
- Collection of test cases for manual execution
- List of defects
- Sequence of test scripts
- Set of instructions
A 'test suite' in the context of automated testing primarily consists of a sequence or collection of test scripts that are intended to be executed as a batch. This allows for organized execution of related tests, ensuring thorough coverage and validation of specific application functionality.
You're working on a C program that needs to manipulate and process data about a list of products in a store. Each product has several attributes like name, price, and quantity. What approach would you take to store and process this data efficiently?
- 2D Array
- Array of Structures
- Singly Linked List
- Vector
An array of structures would be an efficient approach for storing and processing data about products in a store. This data structure allows you to create a custom data type that contains all the attributes of each product (name, price, quantity), making it easy to manage and process product information efficiently.
In C, using pointers to structures can lead to more efficient memory usage because it allows for ________ allocation and deallocation of memory.
- Dynamic
- Heap
- Stack
- Static
Pointers to structures in C enable dynamic allocation and deallocation of memory, as they can be used to allocate memory on the heap, which is not possible with static memory allocation.
Why is it recommended to use pointer arithmetic instead of array indexing for traversal in some cases?
- It ensures type safety and prevents buffer overflows
- It provides faster traversal and better optimization
- It reduces the risk of pointer errors
- It simplifies code and makes it more readable
Using pointer arithmetic for traversal is recommended in some cases because it can result in faster traversal and better optimization, especially in complex data structures. However, it requires careful handling to avoid pointer errors.
You are developing a log monitoring tool that needs to constantly read a log file and process new entries. What approach would you take to efficiently read the file?
- Employ multi-threading to parallelize log file reading.
- Periodically restart the application to clear the file buffer.
- Use a polling mechanism to check for file changes.
- Use a single-threaded approach to read the file sequentially.
Efficient log file reading often involves multi-threading to process entries concurrently, leading to better performance.
You're developing a program that needs to frequently update specific records in a large binary file. Which file handling functions would be most useful to efficiently locate and update records?
- fseek() and fwrite()
- fread() and ftell()
- fprintf() and fscanf()
- fgetc() and fputc()
To efficiently locate and update records in a binary file, you would use fseek() to move to the desired position and fwrite() to write the updated data. The other options are not suitable for this specific task.
A pointer to a function in C is declared using the syntax ________.
- *func_ptr
- func()ptr
- func_ptr()
- ptr_func
In C, to declare a pointer to a function, you use the syntax "return_type (*pointer_name)(arguments)." This allows you to call a function through the pointer.
Failing to release a memory block with ________ before the program terminates can result in a memory leak.
- calloc()
- free()
- malloc()
- realloc()
Failing to release memory with the "free()" function in C can result in a memory leak, where the allocated memory is not properly deallocated, causing the program to consume more memory than necessary.
Consider a scenario where a program needs to store a character read from a file. Which data type would be appropriate for this?
- char
- double
- float
- int
To store a character read from a file in C, the appropriate data type is 'char' as it can represent individual characters effectively.
In C, function pointers are useful when you want to choose at runtime which ________ to execute.
- Data structure
- Function or behavior
- Memory allocation
- Variable
Function pointers in C allow you to select and call functions dynamically at runtime based on the desired behavior, enhancing the flexibility of your code.