What is the output of the following code fragment?

int a[] { 2, 1, 0 };
int n = 0;
for (int v : a)  { v++; n += v; }
for (int& v : a) { n++; v += n; }
std::cout << n << ' ' 
          << a[0] << ' ' << a[1] << ' ' << a[2] << '\n';

Consider (as usual in 64-bit machines) that values of type int, and char

are represented using 4 and 1 bytes in memory, respectively. What is the output of the following program (assuming no padding is necessary for the struct

types involved)?

struct event {
  char id[4];
  int code;
};
struct week {
  int number;
  event events[7];
};
int main() {
  week w;
  std::cout << sizeof(w) << '\n';
  return 0;
}

What is the output of the following code fragment?

char s[] = "2LEIC 022";
int i = 0;
do { i++; } while (s[i] != '\0' && s[i] != '2');
s[i] = '\0';
std::cout << i << " \"" << s << "\"\n";

For what value of i

, read from the input in the following code fragment, there is a buffer overflow?

struct data { int x; int y; };
data a[] { {1, 2}, {3, 3}, {2, 1}, {0, 0} };
int i;
std::cin >> i;
std::cout << a[a[a[i].x].y - 1].x;

For what value of i

, read from the input in the following code fragment, is there a buffer overflow?

int a[] = { 1, 3, 2, 0 };
int i; 
cin >> i;
a[a[i] + 1] = a[i];

Consider a C++ function of the form:

int f(const int a[], int b[]) {
   int c[] { 0, 1, 2 };
   // ...
   return c[0] + c[1] + c[2];
}

Which of the following possibilities to complete the code of f is valid (does not cause a compilation error) after the declaration of c and before the return

instruction?

Consider (as usual in 64-bit machines) that values of type long, int, and char

are represented using 8, 4, and 1 bytes in memory, respectively.

How many bytes are required for the representation of v

shown in the code fragment below (assuming no padding)?

struct data {
   long a;
   int  b[3];
   char c[12]; 
};
data v[4];

What is the output of the following code fragment?

struct data {
   int i;
   int j; 
   int v;
}; 
data d[3] { {0, 1, 2}, {3, 2, 1}, {0, 1, 2} };
std::cout << d[2].j << ' ' << d[d[0].v].i << ' ' << d[d[1].j].v << '\n';

What is the output of the following code fragment?

char s[] = "C/C++ is fun!";
int i = 0;
while (s[i] != '\0' && s[i] != ' ') i++;
s[i] = '\0';
std::cout << i << ' ' << s << '\n';

Assume that there is a struct type called data and that we wish to program a function f that takes 2 data input (read-only) parameters a and b and yields a result also of type data

.

What is the most appropriate declaration of f, if sizeof(data)

exceeds the word size of 8 bytes in a 64-bit machine?