CPP File Handling & Standard Template Library (STL)

Question 1

Which header file is required for file handling in C++?

Accepted Answer

Answer

Answer

Answer

<stdio.h>

Question 2

Which stream is used to write to a file?

Accepted Answer

ofstream

Answer

ifstream

Answer

fstream

Answer

istream

Question 3

Which STL container stores key-value pairs?

Accepted Answer

map

Answer

vector

Answer

list

Answer

queue

Question 4

Which operation checks if a file stream opened successfully?

Accepted Answer

file.is_open()

Answer

file.read()

Answer

file.good()

Answer

file.exists()

Question 5

Which STL container allows access in constant time using indices?

Accepted Answer

vector

Answer

list

Answer

deque

Answer

stack

Question 6

Which function is used to read data from a file line by line?

Accepted Answer

getline()

Answer

get()

Answer

readline()

Answer

input()

Question 7

Which STL algorithm is used to sort elements?

Accepted Answer

sort()

Answer

arrange()

Answer

order()

Answer

shuffle()

Question 8

What is required to use STL containers like vector or map?

Accepted Answer

#include <vector>

Answer

#include <stl>

Answer

#include <container>

Answer

#include <library>

Question 9

Which stream is used to read from a file?

Accepted Answer

ifstream

Answer

ofstream

Answer

istream

Answer

fstreamwrite