parameterMystery12

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< parameterMystery11

parameterMystery1XX >

Main Page → Exercises → C++ → Solve an Exercise

Language/Type: C++ parameters references reference parameters pointers

The following code produces 4 lines of output. What is the output? Write each line of output as it would appear on the console.

For the purposes of this problem, assume that the variables in main are stored at the following memory addresses:

main's a variable is stored at address 0xaa00
main's b variable is stored at address 0xbb00
main's c variable is stored at address 0xcc00
main's d variable is stored at address 0xdd00
main's e variable is stored at address 0xee00
any memory allocated on the heap (using new) will be at address 0x777700

int mystery(int* a, int b, int& c) {
    c++;
    b--;
    *a = (c + b);
    cout << *a << " " << b << " " << c << endl;
    return b;
}

int main() {
    int a = 1;
    int b = 30;
    int c = 500;
    int* d = new int;
    *d = a;
    int* e = &b;

    mystery(d, c, b);
    b = mystery(&c, a, *e);

    cout << a << " " << b << " " << c << " " << d << " " << e << endl;
    cout << &a << " " << &b << " " << &c << " " << *d << " " << *e << endl;
    return 0;
}

line 1
line 2
line 3
line 4

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