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.
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.
How are the members of a structure accessed in C?
- By using the arrow (->) operator
- By using the dollar sign ($)
- By using the dot (.) operator
- By using the exclamation mark (!)
In C, structure members are accessed using the dot (.) operator. This allows you to access the individual fields within a structure.
You are debugging a C program and notice that a variable intended to store large numbers is not holding the values correctly. What might be the issue with the data type used?
- The issue might be with using an int data type.
- The issue might be with using a float data type.
- The issue might be with using a double data type.
- The issue might be with using a short data type.
The correct option is 3. When dealing with large numbers, it's more appropriate to use a double data type because it provides greater precision compared to int and float, which may result in loss of precision for large numbers. short data type is typically used for smaller integers.
The function ________ is used to write data to a binary file.
- binary_write()
- fread()
- fwrite()
- write()
The correct function to write data to a binary file in C is fwrite(). It is designed to write a specified number of elements to a binary file, making it an essential function for handling binary data.