Pointers And References In C Plus Plus — Part 2 MCQs with Explanations

Address of a followed by 5 in next line is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <string> #include <cstdlib> using namespace std; int main(int argc, char const *argv[]) { int a = 5; int *p = &a; int &q = a; cout<<p<<endl; cout<<q<<endl; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

L prefix is the correct answer to “How to declare a wide character in the string literal”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

References once assigned cannot be changed to refer another variable is the correct answer to “Pick the correct statement about references.”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

10,20,30,40,50, is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main () { int numbers[5]; int * p; p = numbers; *p = 10; p++; *p = 20; p = &numbers[2]; *p = 30; p = numbers + 3; *p = 40; p = numbers; *(p + 4) = 50; for (int n = 0; n < 5; n++) cout << numbers[n] << ","; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Error is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <string> #include <cstdlib> using namespace std; void func(const int &a) { int temp = 10; a = temp; cout<<a; } int main(int argc, char const *argv[]) { int a = 5; func(a); return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

two memory addresses is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { int i; char c; void *data; i = 2; c = 'd'; data = &i; cout << "the data points to the integer value" << data; data = &c; cout << "the data now points to the character" << data; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Declares a constant a whose value will be 100 is the correct answer to “Regarding the following statement which of the statements is true? const int a = 100;”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

fg is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { char *ptr; char Str[] = "abcdefg"; ptr = Str; ptr += 5; cout << ptr; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Address of a followed by Address of a in next line is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <string> #include <cstdlib> using namespace std; int main(int argc, char const *argv[]) { int a = 5; int &q = a; cout<<&a<<endl; cout<<&q<<endl; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

both const & volatile is the correct answer to “The pointer can point to any variable that is not declared with which of these”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

In swap 105 In main 105 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; void swap(int &a, int &b); int main() { int a = 5, b = 10; swap(a, b); cout << "In main " << a << b; return 0; } void swap(int &a, int &b) { int temp; temp = a; a = b; b = temp; cout << "In swap " << a << b; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

it will return some random number is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { int a = 5, b = 10, c = 15; int *arr[ ] = {&a, &b, &c}; cout << arr[1]; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

20 30 is the correct answer to “What will be the output of the following C++ code? #include<iostream> using namespace std; int main() { int x = 10; int& ref = x; ref = 20; cout << x << endl ; x = 30; cout << ref << endl; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

21 21 21 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { int a[2][4] = {3, 6, 9, 12, 15, 18, 21, 24}; cout << *(a[1] + 2) << *(*(a + 1) + 2) << 2[1[a]]; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

ava is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { int i; const char *arr[] = {"C", "C++", "Java", "VBA"}; const char *(*ptr)[4] = &arr; cout << ++(*ptr)[2]; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

References and variables both have the same address is the correct answer to “Pick the correct statement about references in C++.”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

none of the mentioned is the correct answer to “A void pointer cannot point to which of these”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

we can not create the array of reference is the correct answer to “Identify the correct sentence regarding inequality between reference and pointer.”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

int i; double* dp = &i is the correct answer to “Which of the following is illegal”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Address of pointer a is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <string> #include <cstdlib> using namespace std; int main(int argc, char const *argv[]) { int a = 5; int *p = &a; int *(&q) = p; cout<<q; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

point to a type is the correct answer to “Which one of the following is not a possible state for a pointer.”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

null is the correct answer to “Which value can we not assign to reference”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

343 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int f(int &x, int c) { c = c - 1; if (c == 0) return 1; x = x + 1; return f(x, c) * x; } int main(int argc, char const *argv[]) { int a = 4; cout<<f(a,a); return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Error is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <string> #include <cstdlib> using namespace std; int main(int argc, char const *argv[]) { int &q = NULL; cout<<q; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

& is the correct answer to “Which reference modifier is used to define the reference variable”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

* is the correct answer to “The operator used for dereferencing or indirection is . . . . . . . .”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Compile-time error is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <string> #include <cstdlib> using namespace std; int main(int argc, char const *argv[]) { int &q = 5; cout<<q; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

when it cast to another type of object is the correct answer to “When does the void pointer can be dereferenced”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

literals is the correct answer to “The constants are also called as . . . . . . . .”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

13 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { int arr[] = {4, 5, 6, 7}; int *p = (arr + 1); cout << *arr + 9; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Error is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <string> #include <cstdlib> using namespace std; int main(int argc, char const *argv[]) { int &p; int a = 5; &p = a; cout<<p; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

ABCDEFGHIJ is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { char arr[20]; int i; for(i = 0; i < 10; i++) *(arr + i) = 65 + i; *(arr + i) = '\0'; cout << arr; return(0); }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

all of the mentioned is the correct answer to “What are the parts of the literal constants”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

p is array of pointer to function is the correct answer to “What is the meaning of the following declaration? int(*p[5])();”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

p now points to b is the correct answer to “What will happen in the following C++ code snippet? int a = 100, b = 200; int *p = &a, *q = &b; p = q;”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

12.5664 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; #define PI 3.14159 int main () { float r = 2; float circle; circle = 2 * PI * r; cout << circle; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

References are an alias for a variable whereas pointer stores the address of a variable is the correct answer to “What is the difference between references and pointers”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

equal is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { int *p; void *vp; if (vp == p) cout << "equal"; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

30 is the correct answer to “What will be the output of the following C++ code? #include<iostream> using namespace std; int &fun() { static int x = 10; return x; } int main() { fun() = 30; cout << fun(); return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Compile-time error is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <string> #include <cstdlib> using namespace std; int main(int argc, char const *argv[]) { int a = 5; int *p = &a; int &q = p; cout<<p; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.