The correct answer for the following questions are E,C,B,B. Can you explain them

Question

The correct answer for the following questions are E,C,B,B. Can you explain them for me.

void decision(int &, int );
int main ( )
{
int x = 0;
int y = 3;
decision(x, y);
return 0;
}
void decision(int &a, int b)
{
if(a = 1)
cout<<a;
else if (b == 3)
cout<<b;
if(b == 2)
cout<< “Not 2”;
cout<< “Done”;
}

8. What does this code output?
a. 123 d. 03Done
b. 132 e. 1Done
c. 3 Not 2
9. How many cout statements are executed?
a. 3 d. 0
b. 1 e. 4
c. 2
10. The values of x and y after the function call are?
a. x = 0 and y = 2 d. x = 1 and y = 2
b. x = 1 and y = 3 e. x = 0 and y = 3
c. x = 0 and y = 2
11. None of the values passed to the function change.
a. True b. False

Explanation / Answer

8.) first statement in if assigns a with value 1 and condition will become true. Therefore it will print value of a which is 1, Since condition in if block evaluates to true condition in elseif will not be checked and Done will print obviously.

9.) 2 cout statements will execute. One which is displaying a and another which is displaying done as explained previously.

10.) value of x is passed as reference. therefore any change in a will reflect on x. Therefore value of x will become 1 and value of y will not change.

11.) Since value of x is passed as reference. therefore value of x will be altered

Hope it helps, do give your valuable response.

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