Functions And Procedures In C Plus Plus — Part 2 MCQs with Explanations

An anonymous function that can be used as an argument to other functions is the correct answer to “In C++, what is a lambda function”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Determines the type of an expression or variable is the correct answer to “What is the purpose of the 'decltype' keyword in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

returnType functionName(type* parameter) is the correct answer to “What is the correct way to declare a function that takes a pointer as an argument in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Hello is the correct answer to “What will be the output of the following code: void display() { cout << "Hello"; } int main() { display(); return 0; } in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

compile time error is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int func (int a, int b) { cout << a; cout << b; return 0; } int main(void) { int(*ptr)(char, int); ptr = func; func(2, 3); ptr(2, 3); return 0; }”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

default arguments is the correct answer to “If we start our function call with default arguments means, what will be proceeding arguments”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

int is the correct answer to “Which of the following is the default return value of functions in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

A function that is expanded at each call during execution is the correct answer to “What is an inline function”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

segmentation fault is the correct answer to “What will be the output of the following C++ code? include <iostream> using namespace std; long factorial (long a) { if (a > 1) return (a * factorial (a + 1)); else return (1); } int main () { long num = 3; cout << num << "! = " << factorial ( num ); return 0; }”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Namespace is used to group class, objects and functions is the correct answer to “Identify the correct statement.”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

only inside the {} block is the correct answer to “What is the scope of the variable declared in the user defined function”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

It cannot be modified inside the function is the correct answer to “If an argument from the parameter list of a function is defined constant then . . . . . . . .”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

abnormal program termination is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; void Funct(); int main() { try { Funct(); } catch(double) { cerr << "caught a double type..." << endl; } return 0; } void Funct() { throw 3; }”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

2 15 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; void Sum(int a, int b, int & c) { a = b + c; b = a + c; c = a + b; } int main() { int x = 2, y =3; Sum(x, y, y); cout << x << " " << y; return 0; }”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

functions is the correct answer to “which of the following can be passed in function pointers”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

To the rightmost side of the parameter list is the correct answer to “Where should default parameters appear in a function prototype”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Error is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <string> using namespace std; namespace A{ int var = 10; } namespace B{ int cout = 5; } int main() { using namespace B; cout<<A::var; }”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

call by reference is the correct answer to “Which is more effective while calling the functions”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

pure abstract class is the correct answer to “What is similar to the interface in c++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

5500.263 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; void print(int i) { cout << i; } void print(double f) { cout << f; } int main(void) { print(5); print(500.263); return 0; }”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

75386824 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; #define SquareOf(x) x * x int main() { int x; cout << SquareOf(x + 4); return 0; }”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Namespace has access specifiers like private or public is the correct answer to “Pick the incorrect statement for namespaces in C++.”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

32 is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <stdarg.h> using namespace std; int add (int num, ...) { int sum = 0; va_list args; va_start (args,num); for (int i = 0; i < num; i++) { int num = va_arg (args,int); sum += num; } va_end (args); return sum; } int main (void) { int total = add(8, 1, 2, -1, 4, 12, -2, 9, 7); cout << "The result is " << total; return 0; }”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

error is the correct answer to “What will happen when the exception is not caught in the program”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

blank space is the correct answer to “What should be passed in parameters when function does not require any parameters”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

2 is the correct answer to “How many types do functions fall depends on modularization”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

48697 is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <stdarg.h> using namespace std; void dumplist(int, ...); int main() { dumplist(2, 4, 8); dumplist(3, 6, 9, 7); return 0; } void dumplist(int n, ...) { va_list p; int i; va_start(p, n); while (n-->0) { i = va_arg(p, int); cout << i; } va_end(p); }”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

using is the correct answer to “Which keyword is used to access the variable in the namespace”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

rightmost is the correct answer to “Where can the default parameter be placed by the user”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

The location of variable in memory is passed to the function so that it can use the same memory area for its processing is the correct answer to “What will happen while using pass by reference”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

10 is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <string> using namespace std; namespace { int var = 10; } int main() { cout<<var; }”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

scope operator is the correct answer to “Which operator is used to signify the namespace”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

#define is the correct answer to “which keyword is used to define the macros in c++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

10 2.5 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int operate (int a, int b) { return (a * b); } float operate (float a, float b) { return (a / b); } int main() { int x = 5, y = 2; float n = 5.0, m = 2.0; cout << operate(x, y) <<"\t"; cout << operate (n, m); return 0; }”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

10 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; #define PR(id) cout << "The value of " #id " is "<<id int main() { int i = 10; PR(i); return 0; }”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

return function is the correct answer to “In which of the following we cannot overload the function”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

5 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int fun(int=0, int = 0); int main() { cout << fun(5); return 0; } int fun(int x, int y) { return (x+y); }”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

try is the correct answer to “Which keyword is used to check exception in the block of code”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

i, iii, iv is the correct answer to “In which of the following cases inline functions may not word? i. If the function has static variables. ii. If the function has global and register variables. iii. If the function contains loops iv. If the function is recursive”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

:: is the correct answer to “Which operator is used for accessing a member of namespace”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.