Help with finished test

I am took this online assignment but it won't tell me what the right answers I missed are. Its really bugging me, It said I missed some but wont tell me what. Could you tell me what I missed and what the right answer is? I put an x by my answers.

1. What type must a variable be if you want to store the number 9.8987 in it?

Xdouble
char
int
bool


2. What is the proper way of declaring and initializing a variable in the same line?

a=int; a = 10;
a=10 int;
X int a=10;
it is not possible


3. What is the value of the variable result after the execution of the following code segment?
int a=2, b=2, c=6, result;
result = a * b + a + c / 2;

8
6
10
X9


4. If two arithmetic operators in an expression have the same precedence, they work according to their:

prioritizing factor
X associativity
data types
maximun numbers


5. Which of the following is not a valid boolean expression.?

(1 < x < 100)
(x != 1) && (y !=10)
(x >= 5) && (x<=50)
X (x ==y)


6. Which of the following operators has the highest precedence?

*
&&
X ( )
+=


7. What is the value of result variable after the execution of the following code segment:
int a = 8;
int b = 9;
int c = 0;
int result=100;
if (a != b && c == 0 ) result++;
else --result;

99
100
0
X101

8. Which of the loop statements is ideal for situations that require a counter

The do-while loop
X The for loop
Nested loops
The while loop


9. Convert the following while loop to a for loop

a = 8; sum=0;
while ( a > 0 ) { sum = sum + a; a= a - 1; }



for (a=8; sum=0 ; a > 0; a--) sum ++;
for (a=8, sum =0 ; a > 0; a--) sum += a;
X for (a=8; sum=0 ; a > 0; a=a-1) sum + a;
for (a=8, sum =0 ; a < 0; a--) sum += a;


10. How many times will the value in the variable tmp be displayed in the following program segment? (assume output displays the value of the variable).

int x, y, z; int tmp=0;
for (x=0; x<2; x++)
for (y=0; y<2; y++)
for (z=0; z<2; z++) output (tmp);

0
2
6
X 8


11. What is the value of the variable result after the execution of the following code segment?

a = 5; result=10;
while ( a++ < 10 ) { result ++; }

15
X 14
16
10


12. What is the value of the variable result after the following switch statement?

int result=0;
int option=1;
switch (option) {
case 0: result=result+1;
case 1: result=result+2;
case 2: result=result+3;
}

1
X 2
3
5



13. What is the output after the following for statement? (assume output displays the value of the variable).

for (int i=0; i<10; i++) {
if (i>=2 && i<=6) continue;
else output ( i );
}

1 2 3 4 5 6 7 8 9
0 1 7 8 9
X 0 1 2 6 7 8 9
2 3 4 5 6

14. The _________ statement causes a loop to terminate immediately.

continue
quit
X break
end loop


15. After declaring an array of 5 integers, what is the output of the following code segment:? (assume output displays the value of the variable)

for (int i = 0; i < 5; i++) {
array[i] = i * i ;
}
output (array[3] );

2
3
4
X 9

16.Function getValue has ____ parameter(s) and its return type is _____

double getValue (int x, float y) {
/* body of the function*/
}

X 2, double
1, int
1, float
2, void

17. The keyword _______ indicates that a function/method does not return a value.

nokey
return
X void
exit

18. What is the output of the following segment code after calling the function/method display ?

void disp ( ) {
int i=10;
duplicate ( i );
output(i);
}
static void duplicate (int i) {
i=i*2;
}

0
10
20
X syntax error


19. The scope of a _______ variable starts from its declaration and continues to the end of the block that contains the variable

static
X local
global
public

20. When passing an array as an argument to a function, the funtion __________

X will pass it by value
cannot modify the original array
can modify the original array
will create a new version of the array

I can not say that this is 100% as it has been some time since I have done C or C++ but here are the ones that I have different answers for and what I thing they should be

5. 1
9. 2
11. 1
13. 2
18. 3
20. 3

Thanks so much