Question

1.    Given the following segment of code: (If there is nothing output, write None.) int x;...

1.    Given the following segment of code: (If there is nothing output, write None.)

int x;

int y;

cin >> x;

cin >> y;

while (x > y)

{

    x -= 3;

    cout << x << " ";

}

cout << endl;

       a.    What are the output and final values of x and y when the input is 10 for x and 0 for y? [2, 2, 2]

              Output

                                                                                                                                                                                                   x = ______________

                                                                                                                                                                                                   y = ______________

       b.    What are the output and final values of x and y when the input is 8 for x and 8 for y? [2, 2, 2]

              Output

                                                                                                                                                                                                   x = ______________

                                                                                                                                                                                                   y = ______________

       c.    What are the output and final values of x and y when the input is 17 for x and 5 for y? [2, 2, 2]

              Output

                                                                                                                                                                                                   x = ______________

                                                                                                                                                                                                   y = ______________

Engineering   Computer-Science   
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Homework Answers

Answer #1

The final value of x and y is

a.

x= -2

y= 0

Explanation:

x=10 y=0

while(x>y) => (10>0) TRUE

x=x-3 = 10-3 = 7

while(x>y) => (7>0) TRUE

x=x-3 = 7-3 = 4

while(x>y) => (4>0) TRUE

x=x-3 = 4-3 = 1

while(x>y) => (1>0) TRUE

x=x-3 = 1-3 = -2

final value of x=2 and y=0

b.

x= 8

y= 8

Explanation:

x=8 y=8

while(x>y) => (8>8) FALSE

final value of x=8 and y=8

c.

x= 5

y= 5

Explanation:

x=17 y=5

while(x>y) => (17>5) TRUE

x=x-3 = 17-5 = 14

while(x>y) => (14>0) TRUE

x=x-3 = 14-5 = 11

while(x>y) => (11>5) TRUE

x=x-3 = 11-5 = 8

while(x>y) => (8>0) TRUE

x=x-3 = 8-5 = 5

while(x>y) => (5>5) FALSE

final value of x=8 and y=8

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