Programming in Modern C++ Week 11 Assignment Answers
Are you looking for the NPTEL Programming in Modern C++ Week 11 Assignment Answers? You’ve come to the right place! This resource provides comprehensive solutions to all the questions from the Week 11 assignment, helping you navigate through the complexities of modern C++ programming.
Table of Contents
Programming in Modern C++ Week 11 Assignment Answers (Jan-Apr 2025)
Course Link: Click Here
1) Consider the code segment (in C++11) given below.
Identify the line/s where indicates a universal reference.
a) LINE-I
b) LINE-2
c) LINE-3
d) LINE-4
2) Consider the code segment (in C++11) given below.
#include<iostream>
void fun(const int& i){ std::cout << "Lvalue " << i << std::endl; }
void fun(int&& i){ std::cout << "Rvalue " << i << std::endl; }
template<typename T, typename U>
void wrapper(T&& n1, U&& n2){
fun(n1);
fun(n2);
fun(std::move(n1));
fun(std::move(n2));
fun(std::forward<T>(n1));
fun(std::forward<U>(n2));
}
int main(){
int i = 10;
wrapper(i, std::move(i));
return 0;
}
What will be the output?
a)
b)
c)
d)
3) Consider the following class (in C++11).
#include <iostream>
enum class Color { RED, GREEN, YELLOW } color;
enum class Signal { RED, GREEN, YELLOW } signal;
enum Tint { RED, GREEN, YELLOW } tint;
bool testRed(Color col){
if (col == Color::RED)
return true;
return false;
}
bool testGreen(Color col){
if (col == Signal::GREEN)
return true;
return false;
}
bool testYellow(Color col){
if (col == Color::YELLOW)
return true;
return false;
}
int main() {
if (testRed(Color::RED)) // LINE-I
if (testGreen(Color::GREEN)) // LINE-2
if (testYellow(Color::YELLOW)) // LINE-3
std::cout << "success";
return 0;
}
Identify the statement/s which are true for the given program.
a) It generates compiler error at LINE-I
b) It generates compiler error at LINE-2
c) It generates compiler error at LINE-3
d) It generates the output success
4) Consider the following code segment (in C++11).
#include <iostream>
template<typename T>
T findMax(T t){
return t;
}
template<typename T, typename... Args>
T findMax(T t, Args... args){
return
}
// LINE-I
std::cout << findMax(20, 30, 60, 50) << std::endl;
return 0;
Identify the appropriate return statement at LINE-I such that the function findMax finds out the maximum element from the given argument list (in this case the output is 60).
a)
b)
c)
d)
5) Consider the following code segment (in C++11).
#include <iostream>
#include <algorithm>
#include <vector>
template<typename T>
void process(std::vector<T>& tVec){
struct compare{
bool operator()(T a, T b){ return a > b; }
};
std::sort(tVec.begin(), tVec.end(), compare()); // LINE-I
}
int main() {
std::vector<int> iVec {20, 40, 60, 10, 50};
process(iVec);
for (int i : iVec)
std::cout << i << " ";
return 0;
}
What will be the output/error?
a) 10 20 40 50 60
b) 60 50 40 20 10
c) 20 40 60 10 50
d) Compiler error at LINE-I: compare is local
6) Consider the following code segment (in C++11).
#include <iostream>
#include <vector>
#include <functional>
int main(){
int sum = 0, multi = 0;
auto process = [](int x, int y){
multi = x * y;
return x + y;
};
auto result = process(10, 20); // LINE-I
std::cout << "sum = " << result << ", multiplication = " << multi;
return 0;
}
Identify the appropriate option(s) to fill in the blanks at LINE-I such that the output becomes sum = 30, multiplication = 200.
a) auto process = [&multi] (int x, int y)
b) auto process = [sum, multi] (int x, int y)
c) auto process = = (int x, int y)
d) auto process = (int x, int y)
7) Consider the lambda function (in C++11) below.
auto process = [interval, &result] (int val){
result = val + interval;
std::cout << val << " " << interval << " = " << result;
};
Identify the correct option that defines the equivalent Closure object for the above lambda function.
a)
b)
c)
d)
8) Consider the following code segment (in C++11).
#include <iostream>
#include <string>
class Data {
public:
explicit Data(int _d1) : d1(_d1) { std::cout << "ctor-1 "; }
private:
int d1 {10};
};
class DataPair : public Data {
public:
DataPair() = default;
explicit DataPair(int _d1) : DataPair(_d1, 0.0f) { std::cout << "ctor-2 "; }
explicit DataPair(int _d1, double _d2) : Data(_d1), d2(_d2) { std::cout << "ctor-3 "; }
private:
double d2 {0.0};
};
int main() {
DataPair data(100);
return 0;
}
What will be the output?
a)
b)
c)
d)
9) Consider the following code segment (in C++11).
#include <iostream>
#include <string>
struct StringData {
explicit StringData(const std::string& _d) : d(_d) {}
std::string d;
};
struct IntData {
explicit IntData(const int& _d) : d(_d) {}
operator int() { return d; }
explicit operator int*() const { return nullptr; }
explicit operator std::string() const { return "test"; }
explicit operator StringData() const { return StringData("test"); }
private:
int d;
};
int main() {
IntData data(100);
int i1 = data; // LINE-I
int i2 = static_cast<int>(data); // LINE-2
int *i3 = data; // LINE-3
int *i4 = static_cast<int*>(data); // LINE-4
std::string s1 = static_cast<std::string>(data); // LINE-5
StringData s2 = static_cast<std::string>(data); // LINE-6
StringData s3 = static_cast<StringData>(data); // LINE-7
return 0;
}
Identify the line(s) that will generate compiler error.
a) LINE-I
b) LINE-2
c) LINE-3
d) LINE-4
e) LINE-5
f) LINE-6
g) LINE-7
Programming in Modern C++ Week 11 Assignment Answers
For answers to others Nptel courses, please refer to this link: NPTEL Assignment