ECE 206 Exam Questions and Answers With Verified Solutions 2025
Which operator is the insertion operator? - ✔✔<<
Which header file should be used while working with the output string stream? - ✔✔#include <sstream>
_____ is a predefined ostream object that is pre-associated with a system's standard output, usually a
computer screen. - ✔✔cout
To use an output file in a C++ program you must - ✔✔open the file
create a file stream object that will "point to" to the file
do B and C, but not A
The code for myoutfile.txt generates an error. Why? - ✔✔The file 'myoutfile.txt' has not been opened
The ____ function returns true if the previous stream operation had an error. - ✔✔fail()
A program can insert characters into an ostringstream buffer using the ______ operator. - ✔✔<<
Which XXX generates "Tim Smith is 19 years old." as the output? - ✔✔playerObj << players << " is " <<
age << " years old.";
Why would a file fail to open? - ✔✔The file has incorrect file permissions or the disk is full.
Which XXX will search the input name in the GuestList.txt file? - ✔✔if (!inFS.fail())
Given an ofstream outFS, which syntax is used to check whether a file is opened successfully? - ✔✔if
(!outFS.is_open()) { ... }
, To use files in a C++ program you must include the ________ header file. - ✔✔fstream
If a file exists in a directory and contains data, when an ofstream is used to write data into the file
_____. - ✔✔the file is overwritten with the new data.
Manipulators are defined in the _____ and _____ libraries in namespace std. - ✔✔iomanip; ios
The ostringstream member function ____ returns the contents of an ostringstream buffer as a string. -
✔✔str()
True/False: Both function headers and function calls must list the data types of all data being passed to
the function. - ✔✔False
A(n) ________ argument is one that is automatically passed to a parameter when the argument is left
out of the function call. - ✔✔default
In a function prototype, in addition to the name of the function, you are required to furnish - ✔✔the
data type of the return value.
a data type for each parameter.
A and C, but not B.
A ________ is a dummy function that is called instead of the actual function it represents, to test that
the call to and return from the function are working correctly. - ✔✔stub
The ________ statement causes a function to end and the flow of control to move back to the point
where the function call was made. - ✔✔return
In a function header, in addition to the name of the function, you are required to furnish - ✔✔a data
type for each parameter.
an identifier name for each parameter.
the data type of the return value.
Which operator is the insertion operator? - ✔✔<<
Which header file should be used while working with the output string stream? - ✔✔#include <sstream>
_____ is a predefined ostream object that is pre-associated with a system's standard output, usually a
computer screen. - ✔✔cout
To use an output file in a C++ program you must - ✔✔open the file
create a file stream object that will "point to" to the file
do B and C, but not A
The code for myoutfile.txt generates an error. Why? - ✔✔The file 'myoutfile.txt' has not been opened
The ____ function returns true if the previous stream operation had an error. - ✔✔fail()
A program can insert characters into an ostringstream buffer using the ______ operator. - ✔✔<<
Which XXX generates "Tim Smith is 19 years old." as the output? - ✔✔playerObj << players << " is " <<
age << " years old.";
Why would a file fail to open? - ✔✔The file has incorrect file permissions or the disk is full.
Which XXX will search the input name in the GuestList.txt file? - ✔✔if (!inFS.fail())
Given an ofstream outFS, which syntax is used to check whether a file is opened successfully? - ✔✔if
(!outFS.is_open()) { ... }
, To use files in a C++ program you must include the ________ header file. - ✔✔fstream
If a file exists in a directory and contains data, when an ofstream is used to write data into the file
_____. - ✔✔the file is overwritten with the new data.
Manipulators are defined in the _____ and _____ libraries in namespace std. - ✔✔iomanip; ios
The ostringstream member function ____ returns the contents of an ostringstream buffer as a string. -
✔✔str()
True/False: Both function headers and function calls must list the data types of all data being passed to
the function. - ✔✔False
A(n) ________ argument is one that is automatically passed to a parameter when the argument is left
out of the function call. - ✔✔default
In a function prototype, in addition to the name of the function, you are required to furnish - ✔✔the
data type of the return value.
a data type for each parameter.
A and C, but not B.
A ________ is a dummy function that is called instead of the actual function it represents, to test that
the call to and return from the function are working correctly. - ✔✔stub
The ________ statement causes a function to end and the flow of control to move back to the point
where the function call was made. - ✔✔return
In a function header, in addition to the name of the function, you are required to furnish - ✔✔a data
type for each parameter.
an identifier name for each parameter.
the data type of the return value.
