C++ Language Test 2

Which of the following data types is used to store a single character in C++?

Which operator is used to check if two values are not equal in C++?

What does the & operator do in the context of pointers?

Which keyword is used in C++ to specify an alternative block of code if the if condition is false?

Which of the following statements about the while loop in C++ is true?

What will this program do?

#include <iostream>
#include <fstream>
using namespace std;

int main() {
    ofstream file("test.txt");
    file << "Hello File";
    file.close();
    return 0;
}

What will be the output of the following C++ code?

#include <iostream>
using namespace std;

int square(int x) {
    return x * x;
}

int main() {
    cout << square(4);
    return 0;
}

What will happen if you try to access arr[10] in an array declared as int arr[5];?

Which access specifier allows members to be accessed only inside the class?

Which function is used to get the length of a string in C++?

What will be the output of the following C++ code snippet?

#include <iostream>
using namespace std;
int main() {
    int num = 'A';
    cout << num;
    return 0;
}

What will be the output of the following C++ code snippet?

#include <iostream>
using namespace std;
int main() {
    int a = 5;
    cout << a++ << " " << ++a;
    return 0;
}

What will be the output of this program?

#include <iostream>
using namespace std;

int main() {
    int num = 25;
    int *p = #
    cout << &num << " " << p;
    return 0;
}

What will be the output of the following C++ code snippet?

#include <iostream>
using namespace std;
int main() {
    int num = 8;
    if (num % 2 == 0)
        cout << "Even";
    else
        cout << "Odd";
    return 0;
}

What will be the output of the following C++ code snippet?

#include <iostream>
using namespace std;
int main() {
    int i = 1;
    while (i < 4) {
        cout << i << " ";
        i++;
    }
    return 0;
}

Which class is used to read from a file in C++?

Which of the following demonstrates valid function overloading in C++?

int add(int a, int b);
int add(float a, float b);

What will be the output of the following code?

#include <iostream>
using namespace std;

int main() {
    int arr[] = {10, 20, 30, 40};
    cout << arr[1] + arr[3];
    return 0;
}

What will be the output of this program?

#include <iostream>
using namespace std;

class Person {
private:
    int age;
public:
    void setAge(int a) { age = a; }
    int getAge() { return age; }
};

int main() {
    Person p;
    p.setAge(21);
    cout << p.getAge();
    return 0;
}

What will be the output of this code?

#include <iostream>
#include <string>
using namespace std;

int main() {
    string a = "Good";
    string b = "Morning";
    cout << a + " " + b;
    return 0;
}