Question: What Will The Function Rewind () Do?

Can we pass an array to a user defined function?

Since an array is passed as a pointer, the array’s memory is not copied.

The function uses the memory of the same array that is passed to it, and can change what is in that memory.

Because arrays are already pointers, there is usually no reason to pass an array explicitly by reference..

What will happen if in AC program?

What will happen if in a C program you assign a value to an array element whose subscript exceeds the size of array? The element will be set to 0. The compiler would report an error. The program may crash if some important data gets overwritten.

What will the function rewind () do Mcq?

What will the function rewind() do? Reposition the file pointer to a character reverse. Reposition the file pointer stream to end of file. … rewind() takes the file pointer to the beginning of the file.

What is rewind function in C?

C library function – rewind() The C library function void rewind(FILE *stream) sets the file position to the beginning of the file of the given stream.

What is rewind Stdin?

rewind is a function in the C programming language that is specified in the stdio. h library header file. The function moves the file position indicator to the beginning of the specified stream, while also clearing the error and EOF flags associated with that stream.

What actually gets passed when you pass an array as an argument to a function?

1) In C, if we pass an array as an argument to a function, what actually get passed? Explanation: In C language when we pass an array as a function argument, then the Base address of the array will be passed.

What data type is a pointer?

Pointer is a user defined data type which creates special types of variables which can hold the address of primitive data type like char, int, float, double or user defined data type like function, pointer, etc. or derived data type like an array, structure, union, enum.

What is the return type of Ftell function?

The ftell function returns the current file position indicator for stream. If an error occurs, the ftell function will return -1L and update errno.

What is the purpose of Fflush () function *?

ANSWER: flushes all streams and specified streams. The fflush() function is used in the program which flushes the output buffer of a stream.

What does it mean to flush the buffer?

A buffer flush is the transfer of computer data from a temporary storage area to the computer’s permanent memory. For instance if we make any changes in a file, the changes we see on one computer screen are stored temporarily in a buffer. … The reason is flush function flushed the output to the file/terminal instantly.

What is stderr Linux?

Stderr, also known as standard error, is the default file descriptor where a process can write error messages. In Unix-like operating systems, such as Linux, macOS X, and BSD, stderr is defined by the POSIX standard.

Can you use the fprintf () to display the output on the screen?

Yes ,one can always print output to screen using fprintf.