Quiz: Starting with C++ - 1 - EmSAT Achieve MCQ

What is the purpose of the 'using' keyword in C++?

How do you print output to the console in C++?

Which of the following is true about the 'cin' object in C++?

What does the 'endl' manipulator do in C++?

What is the purpose of the 'namespace' keyword in C++?

How do you include the <cmath> library in C++?

Which of the following is true about the main() function in C++?

What is the output of the following code snippet?

#include <iostream>

int main() {
    int x = 5;
    int y = 10;
    int z = x + y;
    std::cout << "The value of z is: " << z << std::endl;
    return 0;
}

What is the output of the following code snippet?
#include <iostream>

int main() {
    int x = 5;
    std::cout << "The value of x is: " << x << std::endl;
    return 0;
}

What is the output of the following code snippet?

#include <iostream>

int main() {
    int x = 10;
    std::cout << x << " " << x++ << std::endl;
    return 0;
}

What is the output of the following code snippet?

#include <iostream>

int main() {
    int x = 5;
    std::cout << x++ << " " << ++x << std::endl;
    return 0;
}

What is the output of the following code snippet?

#include <iostream>

int main() {
    int x = 10;
    int y = 5;
    std::cout << "The sum of x and y is: " << x + y << std::endl;
    return 0;
}

What is the output of the following code snippet?

#include <iostream>

int main() {
    int x = 10;
    int y = 5;
    std::cout << "The difference of x and y is: " << x - y << std::endl;
    return 0;
}

What is the output of the following code snippet?
#include <iostream>

int main() {
    int x = 10;
    int y = 2;
    std::cout << "The division of x and y is: " << x / y << std::endl;
    return 0;
}

What is the output of the following code snippet?
#include <iostream>

int main() {
    int x = 10;
    int y = 3;
    std::cout << "The remainder of x divided by y is: " << x % y << std::endl;
    return 0;
}

What is the output of the following code snippet?
#include <iostream>

int main() {
    int x = 5;
    int y = 2;
    int z = x * y;
    std::cout << "The value of z is: " << z << std::endl;
    return 0;
}

What is the output of the following code snippet?
#include <iostream>

int main() {
    int x = 2;
    int y = x + 3;
    std::cout << "The value of y is: " << y << std::endl;
    return 0;
}

What does the following code snippet output?
#include <iostream>

int main() {
    int x = 10;
    int y = 5;
    if (x > y) {
        std::cout << "x is greater than y";
    } else {
        std::cout << "x is less than or equal to y";
    }
    return 0;
}

What does the following code snippet output?
#include <iostream>

int main() {
    int x = 10;
    int y = 5;
    if (x == y) {
        std::cout << "x is equal to y";
    } else if (x > y) {
        std::cout << "x is greater than y";
    } else {
        std::cout << "x is less than y";
    }
    return 0;
}

What does the following code snippet output?
#include <iostream>

int main() {
    int x = 10;
    int y = 5;
    int z = 7;
    if (x > y && x > z) {
        std::cout << "x is the largest";
    } else if (y > x && y > z) {
        std::cout << "y is the largest";
    } else {
        std::cout << "z is the largest";
    }
    return 0;
}

What does the following code snippet output?
#include <iostream>

int main() {
    int x = 10;
    int y = 5;
    int z = 7;
    if (x > y || x > z) {
        std::cout << "x is greater than y or z";
    } else {
        std::cout << "x is less than or equal to y and z";
    }
    return 0;
}

What does the following code snippet output?
#include <iostream>

int main() {
    int x = 10;
    int y = 5;
    int z = 7;
    if (x > y && x > z) {
        std::cout << "x is the largest";
    } else if (y > z) {
        std::cout << "y is the largest";
    } else {
        std::cout << "z is the largest";
    }
    return 0;
}

What does the following code snippet output?
#include <iostream>

int main() {
    int x = 10;
    int y = 5;
    int z = 7;
    int max = (x > y) ? ((x > z) ? x : z) : ((y > z) ? y : z);
    std::cout << "The maximum value is: " << max;
    return 0;
}

What does the following code snippet output?
#include <iostream>

int main() {
    int x = 10;
    int y = 5;
    int z = 7;
    int min = (x < y) ? ((x < z) ? x : z) : ((y < z) ? y : z);
    std::cout << "The minimum value is: " << min;
    return 0;
}

What does the following code snippet output?
#include <iostream>

int main() {
    int x = 5;
    switch (x) {
        case 1:
            std::cout << "One";
            break;
        case 2:
            std::cout << "Two";
            break;
        case 3:
            std::cout << "Three";
            break;
        default:
            std::cout << "Other";
            break;
    }
    return 0;
}

What does the following code snippet output?
#include <iostream>

int main() {
    int x = 2;
    switch (x) {
        case 1:
            std::cout << "One";
            break;
        case 2:
            std::cout << "Two";
            break;
        case 3:
            std::cout << "Three";
            break;
        default:
            std::cout << "Other";
            break;
    }
    return 0;
}

What does the following code snippet output?
#include <iostream>

int main() {
    int x = 3;
    switch (x) {
        case 1:
            std::cout << "One";
        case 2:
            std::cout << "Two";
        case 3:
            std::cout << "Three";
            break;
        default:
            std::cout << "Other";
            break;
    }
    return 0;
}