This set of MCQ(multiple choice questions) focuses on the Programming in Modern C++ NPTEL Week 2 Assignment Solutions.
Programming in C++ is so fundamental that all companies dealing with systems as well as application development (including web, IoT, embedded systems) have a need for the same. These include – Microsoft, Samsung, Xerox, Yahoo, Oracle, Google, IBM, TCS, Infosys, Amazon, Flipkart, etc. This course would help industry developers to be up-to-date with the advances in C++ so that they can remain at the state-of-the-art.
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Week 0: Assignment answers
Week 1: Programming in C++ is Fun
Week 2: C++ as Better C.
Week 3: OOP in C++.
Week 4: OOP in C++.
Week 5: Inheritance.
Week 6: Polymorphism.
Week 7: Type Casting.
Week 8: Exceptions and Templates.
Week 9: Streams and STL
Week 10: Modern C++
Week 11: Lambda and Concurrency.
Week 12: Move, Rvalue and STL Containers.
NOTE: You can check your answer immediately by clicking show answer button. This set of “Programming in Modern C++ NPTEL Week 2 Assignment Solution” contains 09 questions.
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Programming in Modern C++ NPTEL Week 2 Assignment Solutions
Q1. Consider the following program.
What will be the output/error(s)?
a) y
b) z
c) Compilation Error: default argument missing for “char add(char, char, char)”
d) Compilation Error: call of overload “add(char, char)” is ambiguous
Answer: c), d)
Q2. Consider the following code segment.
What will be the output?
a) 12
b) 25
c) 9
d) 16
Answer: a) 12
Q3. Consider the following code segment.
Which line/s will give you an error?
a) LINE-1
b) LINE-2
c) LINE-3
d) LINE-4
Answer: b), d)
Q4. Consider the following code segment.
What will be the output/error?
a) 36
b) 30
c) 25
d) Compilation Error: invalid initialization of non-const reference
Answer: d) Compilation Error: invalid initialization of non-const reference
Q5. Consider the following code segment.
What will be the output?
a) 6 6 2 2
b) 6 6 7 7
c) 1 1 2 2
d) 1 1 7 7
Answer: a) 6 6 2 2
Q6. Choose the appropriate option to fill in the blanks at LINE-1, such that the output of the code would be: 300 20000.
a) int n3, int* n4
b) int& n3, int *n4
c) int* n3, int* n4
d) int& n3, int& n4
Answer: b) int& n3, int *n4
Q7. What will be the output/error?
a) <garbage value>
b) 5
c) Compilation Error at LINE-1: uninitialized const ‘ptr’
d) Compilation Error at LINE-2: assignment of read-only variable ‘ptr’
Answer: c), d)
Q8. What will be the output/error?
a) 5
b) 10
c) 5
10
d) Compilation error at LINE-2: ambiguating new declaration of ‘int fun(int)’
Answer: d) Compilation error at LINE-2: ambiguating new declaration of ‘int fun(int)’
Q9. Fill in the blank at LINE-1 such that the program will print 5 + i3
a) complex operator + (complex &c1, complex &c2)
b) complex operator + (const complex &c1, const complex &c2)
c) operator + (complex &c1, complex &c2)
d) complex + (complex &c1, complex &c2)
Answer: a) complex operator + (complex &c1, complex &c2)
Previous – Programming in Modern C++ NPTEL Week 2 Assignment Solutions
Q1. Consider the following program.
#include<iostream>
using namespace std;
int main() {
const int n; // LINE-1
n = 10; // LINE-2
cout << n;
return 0;
}What will be the output/error?
a) 0
b) 10
c) Compilation Error at LINE-1: uninitialized const ‘n’
d) Compilation Error at LINE-2: assignment of read only variable ‘n’
Answer: c), d)
Q2. Consider the following code segment.
#include<iostream>
using namespace std;
int main() {
int n = 5;
const int *p = &n;
*p = 10; // LINE-1
cout << n;
return 0;
}What will be the output/error?
a) 5
b) 10
c) 0
d) Compilation Error at LINE-1: assignment of read only location ‘*p’
Answer: d) Compilation Error at LINE-1: assignment of read only location ‘*p’
Q3. Consider the following code segment.
#include<iostream>
using namespace std;
#define CUBE(x) x * x * x
int main() {
int a = 3;
int b = CUBE(a+1);
cout << b;
return 0;
}What will be the output/error?
a) 10
b) 64
c) 9
d) Compilation Error: incorrect parameter to macro ‘CUBE’
Answer: a) 10
Q4. Consider the following code segment.
#include<iostream>
using namespace std;
int main() {
int a = 3, b = 5;
_ _ _ _ int &c = ++a + ++b; // LINE-1
cout << c;
return 0;
}Fill in the blank at LINE-1 such that the output is 10.
a) static
b) volatile
c) const
d) inline
Answer: c) const
Q5. Consider the following code segment.
#include<iostream>
using namespace std;
void increment(int x1, _ _ _ _, _ _ _ _) { // LINE-1
x2 = ++ x1;
*x3 = x1++;
}
int main() {
int a = 3, b, c;
increment(a, b, &c);
cout << a << " " << b << " " << c;
return 0;
}Choose the correct option for parameter list at LINE-1 such that the option is 3 4 4.
a) int &x2, int *x3
b) int *x2, int &x3
c) int *x2, int *x3
d) int &x2, int &x3
Answer: a) int &x2, int *x3
Q6. Consider the following code segment.
#include<iostream>
using namespace std;
double fun(int a, double b) {
double c = a + b;
return c;
}
double fun(double a, int b) {
double c = a - b;
return c;
}
int main() {
cout << fun(2,3); // LINE-1
return 0;
}What will be the output/error?
a) 5.0
b) -1.0
c) 1.0
d) Compilation Error at LINE-1: Call of overloaded ‘fun(int, int)’ is ambiguous
Answer: d) Compilation Error at LINE-1: Call of overloaded ‘fun(int, int)’ is ambiguous
Q7. Consider the following code segment.
#include<iostream>
using namespace std;
int add(int a) { return a; }
int add(int a, int b=0) { return a+b; }
int add(int a, int b, int c=0) { return a+b+c; }
double add(double a, double b, double c=0.0) { return a+b+c; }
int main() {
add(1); // LINE-1
add(1, 2); // LINE-2
add(1, 2, 3); // LINE-3
add(1.0, 2.0, 3.0); // LINE-4
return 0;
}Which line/s will give compilation error?
a) LINE-1
b) LINE-2
c) LINE-3
d) LINE-4
Answer: a), b)
Q8. Consider the following code segment.
#include<iostream>
using namespace std;
enum E { Monday, Tuesday=3, Wednesday, Thursday, Friday, Saturday, Sunday };
E operator+(const E &a, const E &b) {
unsigned int ea = a, eb = b;
unsigned int c = (ea + eb) % 7;
return (E)c;
}
int main() {
E a = Wednesday, b = Friday;
E day = a + b;
cout << day;
return 0;
}What will be the output/error?
a) 3
b) 6
c) 1
d) Compilation Error: invalid value in enum
Answer: a) 3
Q9. Consider the following code segment.
#include<iostream>
#include<stdlib.h>
using namespace std;
int main() {
int *p = _ _ _ _ _ _ _; // LINE-1
cout << *p;
delete p;
return 0;
}Fill in the blank at LINE-1 such that the output is 10.
a) (int*)malloc(10*sizeof(int))
b) new int
c) new int(10)
d) new int[10]
Answer: c) new int(10)
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