When you increment a pointer in C, it advances the pointer by the size of the type to which it points, which is known as ________.
- Looping
- Memory allocation
- Pointer arithmetic
- Typecasting
When you increment a pointer in C, it advances the pointer by the size of the type to which it points, and this operation is known as pointer arithmetic. It allows you to navigate through data structures in memory.
What is the significance of using pointers when working with structures in C?
- Pointers allow dynamic memory allocation.
- Pointers enable structures to be passed to functions efficiently.
- Pointers prevent data corruption in structures.
- Pointers simplify access to structure members.
Using pointers when working with structures in C is essential because they enable efficient access to structure members when they are passed to functions. This allows you to manipulate data inside structures without having to create copies of the entire structure.
In a recursive function, if the base case is not properly defined, it can lead to a ________.
- Compilation Error
- Infinite Loop
- Memory Leak
- Stack Overflow
When the base case in a recursive function is not properly defined, it can lead to a stack overflow error. A stack overflow occurs when the function calls itself indefinitely, filling up the call stack. This results in a runtime error.
In a program that processes 3D graphics, you need to calculate the distance between points in space. What concept would be useful in efficiently handling the coordinates of these points?
- Binary search
- Hash tables
- Linked lists
- Pythagorean Theorem
The Pythagorean Theorem is a useful concept for calculating the distance between points in 3D space. It helps efficiently handle the coordinates of these points by providing a straightforward method for distance calculation.
In C, the size of the data type ________ is platform-dependent.
- char
- double
- int
- long
In C, the size of the data type 'double' is platform-dependent. Different platforms may allocate different memory sizes for 'double' data type.
The function ________ is used to close a file in C.
- fclose()
- close()
- endfile()
- fileclose()
The correct option is a) fclose(). This function in C is used to close the file associated with the specified file pointer.
In C, what is the effect of using pointers as function parameters with regards to pass by value and pass by reference?
- Pointers can only be used in pass by value scenarios.
- Pointers enable pass by reference.
- Pointers enable pass by value.
- Pointers have no impact on pass by value or pass by reference.
Using pointers as function parameters in C enables pass by reference. When a pointer to a variable is passed to a function, changes made to the variable within the function are reflected outside the function, similar to pass by reference.
In C++, what is function overloading?
- Creating new functions with unique names for each
- Using different names for the same function with the same parameters
- Using the same name for a single function with different parameters
- Using the same name for different functions with different parameters
In C++, function overloading refers to using the same function name for different functions with different parameter lists. This allows you to perform similar operations with different data types.
What does a nested structure in C allow you to do?
- Create a structure inside another structure
- Define a function inside a structure
- Define a structure with no members
- Nest loops within a structure
In C programming, a nested structure allows you to create a structure inside another structure. This can be useful when you want to represent complex data structures, as it lets you organize related data even further, creating a hierarchical structure.
In C, if you want to ensure that all the data written to a file is physically stored, you can use the ______ function.
- fwrite()
- fflush()
- fseek()
- fsync()
The correct option is b) fflush(). This function flushes the output buffer, ensuring that all data is physically stored in the file.