C++ FILE HANDLING

char buffer[100];

FILE *p1, *p2;

p1 = fopen("myfile.txt", "w");

p2 = fopen("myfile2.txt", "a");

fputs("Buffered stream", p1);

fflush(p1);

setbuf(p2, NULL);

fputs("Unbuffered stream", p2);

fclose(p1);

fclose(p2);

What is the output in myfile.txt?

• Error

• Buffered stream

• Unbuffered stream

• Buffered and unbuffered stream

char buffer[100];

FILE *p1, *p2;

p1 = fopen("myfile.txt", "w");

p2 = fopen("myfile2.txt", "a");

fputs("Buffered stream", p1);

fflush(p1);

setbuf(p2, NULL);

fputs("Unbuffered stream", p2);

fclose(p1);

fclose(p2);

What is the output in myfile2.txt?

• Error

• Buffered stream

• Unbuffered stream

• Buffered and unbuffered stream

It writes a string (which need not contain a newline) to a file. It returns EOF if an error occurs, and a non-negative error otherwise.

• fputc

• fgetc

• fputs

• fopen

It writes the character c to the file and returns the character written or EOF if an error occurs.

• fopen

• fputc

• fgetc

• fgets

It points to a structure that contains things about the file

• file pointer

• file handling

• node pointer

• file structure

When fopen() is not able to open a file, it returns ________

• EOF

• NULL

• runtime error

• compiler dependent

Which of the following is true about FILE *fp; ?

• FILE is a stream

• FILE is a keyword in C for representing files and fp is a variable of FILE type

• FILE is a structure and fp is a pointer to the structure of FILE type

• FILE is a buffered stream

It breaks the connections between the file pointer and the file indicated

• file mode

• fopen

• fclose

• return

The first and second arguments of fopen are?

• A character string containing the name of the file & the second argument is the mode

• A character string containing file pointer & the second argument is the mode

• A character string containing the name of the user & the second argument is the mode

• none of the above

It returns the next character from the stream referred to by the file pointer (fp). It returns EOF for end of file or error.

• fputc

• fopen

• fgetc

• fclose