Can somebody pls explain me how to get these problems done?

what is the output from each of the following segments of C++ code?

Record the output after the Answer prompt at the end of each program fragment. Assume all variables have been suitably declared.

1. for (int j = 15; j > 6; j -= 3)

cout << setw(5) << j;

Answer:

2. int sum = 0;

for (int k = -3; k <= 1; k++)

sum = sum + k;

cout << sum;

Answer:

3. for (int k = 3; k < 6; k++) {

for (int j = 4; j < 7; j++)

cout << setw(4) << (k + j) << " ";

cout << endl; }

Answer:

4. int sum = 0;

int a = 5;

while(a < 8)

{

for (int k = a; k < 7; k++)

sum = sum + k;

a = a + 1;

}

cout << sum << endl;

Answer:

5. int k = 0;

for (k = 1; k <= 10; k++)

{

for (int counter = 1; counter <= 1; counter--)

cout << counter << endl;

cout << " " << endl;

}

cout << k << endl;

Answer:

6. int k = 0; for (k = 10; k < 1; k++)

{

for (int counter = 1; counter <= 10; counter++)

cout << setw(5) << counter;

cout << endl;

}

cout << k << endl;

Answer:

Assuming all variables have been properly declared and all source code has been properly setup in a compiler, what is the output from each of the following fragments of C++ code? Record the output after the Answer prompt at the end of each program fragment.

a. int answer = 6;

int number = 9;

number = number + ++answer;

cout << answer << " " << number;

//Answer:

b. int answer = 6;

int number = 9;

number = number + answer--;

cout << answer << " " << number;

Answer: