The use of ________ allows for dynamic memory allocation for arrays in C.
- for loop
- getchar()
- malloc()
- sizeof()
Dynamic memory allocation in C is achieved using functions like malloc().
How does the strtok() function work in C?
- It calculates the length of a string
- It converts a string to uppercase
- It performs a binary search
- It splits a string into multiple substrings based on a delimiter
The strtok() function in C is used to split a string into multiple substrings based on a specified delimiter. It maintains state between calls, making it useful for tokenizing strings.
What function can be used to find the current position of the file pointer in a file?
- fseek()
- readPosition()
- getCurrentPointer()
- filePosition()
The correct function to find the current position of the file pointer in a file is 'fseek()'. It allows you to set the file position indicator to a specific location in the file and returns the current position. The other options are not valid functions for this purpose.
You are developing a program to manage the seating arrangement in a movie theater with rows and columns. How would you represent the seats using arrays?
- 1D Array
- 2D Array
- Linked List
- Queue (FIFO)
Seats in a theater can be efficiently represented using a 2D array, with rows and columns, making it easy to access and manage each seat's status.
How does the 'return' statement affect the flow of control within a loop?
- The 'return' statement exits the loop, returning control to the calling function or method.
- The 'return' statement has no impact on the flow of control within a loop.
- The 'return' statement skips the next iteration of the loop.
- The 'return' statement terminates the entire program when used within a loop.
The 'return' statement is used to exit a function or method prematurely and return a value. When a 'return' statement is encountered within a loop, it immediately exits the loop and returns control to the calling function or method. This can be useful for ending a loop under certain conditions or returning a value from the loop.
What is the role of the 'continue' statement in a loop?
- It exits the program.
- It restarts the loop from the beginning.
- It skips the current iteration and continues with the next.
- It terminates the loop.
The 'continue' statement is used in loops to skip the current iteration and move to the next iteration. It does not terminate the loop but helps to skip certain iterations.
A function in C returns a value to the calling function using the ________ keyword.
- output
- result
- return
- value
In C, the "return" keyword is used to return a value to the calling function. It specifies the value that the function will return.
Which function is used to close a file that has been opened for reading or writing?
- closefile()
- endfile()
- fclose()
- stopfile()
In C, the fclose() function is used to close a file that has been opened for reading or writing. It is essential to close files to release system resources and ensure that data is properly saved.
What is the standard notation for passing command line arguments in a C program?
- int main(String[] args)
- int main(int argc, char *argv[])
- main(int argc, char *argv[])
- void main(args)
The standard notation for passing command line arguments in a C program is 'int main(int argc, char *argv[])'. 'argc' holds the number of arguments, and 'argv' is an array of argument values.
The ________ statement is used to exit a loop prematurely.
- break
- continue
- return
- switch
In programming, the "break" statement is used to exit a loop prematurely. It is often used in loops such as "for" and "while" to terminate the loop based on a specific condition. The "break" statement is not used to return from a function, control a switch statement, or skip the current iteration of a loop, so it is the correct option.