Pointers can lead to ________ if not managed correctly in a C program.
- Compilation errors
- Memory leaks
- Segmentation faults
- Stack overflows
Pointers in C can cause segmentation faults when not handled properly. A segmentation fault occurs when a program tries to access memory that it's not allowed to access.
Function pointers in C can be passed as arguments to functions, thereby providing a degree of ________.
- Abstraction
- Encapsulation
- Flexibility
- Polymorphism
In C, function pointers enable polymorphism by allowing you to call different functions dynamically. This provides flexibility in your code.
What term is used to describe the process of calling a function within itself?
- Casting
- Looping
- Recursion
- Structuring
The process of calling a function within itself is known as "recursion." It allows for solving problems that can be broken down into smaller, similar subproblems.
In C, to close a file opened by fopen, the function ________ is used.
- close
- fclose
- fflush
- remove
In C, the fclose function is used to close a file that was opened with fopen. It's essential to free resources and ensure data is written.
When working with large datasets, using pointers to structures can help in reducing ________ overhead.
- Computational
- Memory
- Processing
- Storage
Pointers to structures in C can help reduce memory overhead, as they allow for more efficient memory management and allocation, especially when dealing with large datasets.
The ________ function is used to move the file pointer to a specified position in a file.
- moveptr()
- fseek()
- setposition()
- positionfile()
The correct option is b) fseek(). This function in C is used to move the file pointer to a specified position in the file. It takes the file pointer, offset, and origin as arguments.
The function ________ is used to copy one string to another in C.
- compare()
- length()
- strcpy()
- swap()
In C, the function strcpy() is used to copy one string to another. It takes two string arguments and copies the contents of the source string to the destination string until it encounters a null character.
Which sorting algorithm is most efficient when dealing with small datasets or partially sorted data?
- Bubble Sort
- Insertion Sort
- Merge Sort
- Quick Sort
Insertion Sort is efficient for small datasets and partially sorted data due to its simplicity and low overhead.
Which operator is used to access the value stored at the address specified by a pointer?
- &
- *
- ->
- .
The '*' operator in C is used to access the value stored at the address specified by a pointer. It is also known as the dereference operator. The '&' operator is used to get the address of a variable, not the value.
The data type ________ is used in C to store a single character.
- char
- character
- double
- int
In C, the 'char' data type is used to store a single character. It can hold a single character, such as a letter or a symbol, within single quotes.