[CP 2] M7 - File Handling

Filename

Filename

Refers to the name of the file

fclose()

Closes a file

w

File mode that opens or create a text file in writing mode

65

What is the output of the given program?

#include < iostream >

using namespace std;

int main ()

{

char str[] = "Steve jobs";

int val = 65;

char ch = 'A';

cout << val << endl;

return 0;

}

Gets a character, put it into a file pointer until an enter is pressed

What does the following code do?

while( (ch = getchar()) != '\n') {

putc(ch, fp);

}

fprintf()

A function directly writes into the file:

Append

An operation wherein data is added to the existing data of a file

fp = fopen("one.txt", "w");

What is correct syntax for fopen()?

File pointer

It points to a structure that contains about the file:

fstream

A C++ library that allows working with files

fstream

Which of the following is used to create a stream that performs both input and output operations?

fstream

Which stream class is used to both read and write on files?

After pressing return key

When will the cin can start processing of input?

writes to a file

What is meant by ofstream in c++?

fstream

Which stream class is used to both read and write on files?

bool

What is the return type open() method?

getline

What can be used to input a string with blank space?

65

What is the output of the given program?

#include < iostream >

using namespace std;

int main ()

{

char str[] = "Steve jobs";

int val = 65;

char ch = 'A';

cout << val << endl;

return 0;

}

<<

Which operator is used to insert the data into the file? >> <<

Gets a character, put it into a file pointer until an enter is pressed

What does the following code do?

while( (ch = getchar()) != '\n') {

putc(ch, fp);

}

Gets a character, put it into a file pointer until an enter is pressed

Gets a character

Puts character into a variable

Gets a character until enter key is pressed

fgetc()

this function reads the character from the current pointer's positiona nd upon successful read moves the pointer to the next character in the file

fopen()

Writes a character to a file:

getc()

Reads a character from a file:

FILE *fp;

What is the correct syntax for declaring a file pointer?

fopen()

Creates a new file or open an existing file

a

File mode that opens a text file in append mode

text

By default, all the files in C++ are opened in _________ mode.

ifstream

Which stream class is to only read from files?

<fstream\>

Which header file is required to use file I/O operations?

reading a file

The ifstream would be used when:

fprint()

Writes a set of data to a file

fclose

It is the inverse of fopen, it breaks the connections between the file pointer and the external nam that was established by fopen

error

What is the output of the given program?

#include < iostream >

using namespace std;

int main ()

{

char str[] = "Steve jobs";

int val = 65;

char ch = 'A';

cout << val << endl;

return 0;

}

is_open

Which member function is used to determine whether the stream object is currently associated with a file?

\#include<fstream\>

Which header file is used for reading and writing to a file?

fclose(fp);

What is the correct syntax for fclose()?

File

It is created for the permanent storage of data.

end of file

EOF means ______________________________

r

File mode that opens a text in reading mode

fstream

Which of the following header file is required for creating and reading files?

fstream

ifstream

ofstream

stream

<<

Which operator is used to insert the data into the file? >

>>

<<

<

error

What is the output of the given program?

#include < iostream >

using namespace std;

int main ()

{

char str[] = "Steve jobs

int val = 65;

char ch = 'A';

cout << val << endl;

return 0;

}

ofstream

Which of the following is used to create an output stream?

iostream

ifstream

fstream

ofstream

ofstream

Which stream class is to only write on files?

file ata

sequence of bytes on the disk where a group of related data is stored