Hello can anyone help me about my questions thanks 22. Assume that the following

Question

Hello can anyone help me about my questions thanks

22. Assume that the following code is correctly inserted into a program:

int s = 0;

int i;

for (i = 0; i < 5; i++)

{

s = 2 * s + i;

cout << s << " ";

}

cout << endl;

a. What is the final value of s?

(i) 11 (ii) 4 (iii) 26 (iv) none of these

b. If a semicolon is inserted after the right parenthesis in the for loop

statement, what is the final value of s?

(i) 0 (ii) 1 (iii) 2 (iv) 5 (v) none of these

c. If the 5 is replaced with a 0 in the for loop control expression, what is

the final value of s?

(i) 0 (ii) 1 (iii) 2 (iv) none of these

24. Write a for statement to add all the multiples of 3 between 1 and 100.

26. Suppose that the input is 5 3 8. What is the output of the following code?

Assume all variables are properly declared.

cin >> a >> b >> c;

for (j = 1; j < a; j++)

{

d = b + c;

b = c;

c = d;

cout << c << " ";

}

cout << endl;

28. Suppose that the input is 3 5 7 -6 10. What is the output of the

following code?

int temp = 0;

int num;

int count;

cin >> temp;

for (count = 0; count <= 3; count++)

{

cout << temp << " ";

cin >> num;

temp = temp + num * (count - 1);

}

cout << endl;

30. The following program contains errors that prevent it from compiling and/

or running. Correct all such errors.

#include <iostream>

using namespace sdt;

const int SECRET = 111.25;

int main ()

{

int num1, num2:

double x, y;

cout >> "Enter two integers: ""

cin << num1 << num2;

cout >> endl;

for (count = 1 count > Secret; ++count)

{

x = (num1 + num2) / 2.0;

y = (num1 - num2) % 2.0;

num1 := num1 + num2;

num2 := num2 * (count - SECRET - 1)

}

cout << num1 << " " << num2 << " << x % 5

<< " " << (y % 7) << end;

return;

}

32. How many times will each of the following loops execute? What is the

output in each case?

a. x = 5; y = 50;

do

x = x + 10;

while (x < y);

cout << x << " " << y << endl;

b. x = 5; y = 80;

do

x = x * 2;

while (x < y);

cout << x << " " << y << endl;

c. x = 5; y = 20;

do

x = x + 2;

while (x >= y);

cout << x << " " << y << endl;

d. x = 5; y = 35;

while (x < y)

x = x + 10;

cout << x << " " << y << endl;

e. x = 5; y = 30;

while (x <= y)

x = x * 2;

cout << x << " " << y << endl;

f. x = 5; y = 30;

while (x > y)

x = x + 2;

cout << x << " " << y << endl;

34. Rewrite the following as a for loop:

int i = 0, value = 0;

while (i <= 20)

{

if (i % 2 == 0 && i <= 10)

value = value + i * i;

else if (i % 2 == 0 && i > 10)

value = value + i;

else

value = value - i;

i = i + 1;

}

cout << "value = " << value << endl;

What is the output of this loop?

36. The do. . .while loop in the following program is supposed to read some numbers until it reaches a sentinel (in this case, -1). It is supposed to add all of the numbers except for the sentinel. If the data looks like:

12 5 30 48 -1

the program does not add the numbers correctly. Correct the program so that it adds the numbers correctly.

#include <iostream>

using namespace std;

int main()

{

int total = 0,

count = 0,

number;

do

{

cin >> number;

total = total + number;

count++;

}

while (number != -1);

cout << "The number of data read is " << count << endl;

cout << "The sum of the numbers entered is " << total

<< endl;

return 0;

}

38. Using the same data as in Exercise 36, the following loop also fails. Correct it.

cin >> number;

while (number != -1)

{

cin >> number;

total = total + number;

}

cout << endl;

cout << total << endl;

40. Given the following program segment:

int limit = 4;

int first = 5;

int j;

for (j = 1; j <= limit; j++)

{

cout << first * j << endl;

first = first + (j - 1);

}

cout << endl;

write a while loop and a do. . .while loop that have the same output.

42. To learn how nested for loops work, do a walk-through of the following program segments and determine, in each case, the exact output.

a. int i, j;

for (i = 1; i <= 5; i++)

{

for (j = 1; j <= 5; j++)

cout << setw(3) << i;

cout << endl;

}

b. int i, j;

for (i = 1; i <= 5; i++)

{

for (j = (i + 1); j <= 5; j++)

cout << setw(5) << j;

cout << endl;

}

c. int i, j;

for (i = 1; i <= 5; i++)

{

for (j = 1; j <= i; j++)

cout << setw(3) << j;

cout << endl;

}

d. const int M = 10;

const int N = 10;

int i, j;

for (i = 1; i <= M; i++)

{

for (j = 1; j <= N; j++)

cout << setw(3) << M * (i - 1) + j;

cout << endl;

}

e. int i, j;

for (i = 1; i <= 9; i++)

{

for (j = 1; j <= (9 - i); j++)

cout << " ";

for (j = 1; j <= i; j++)

cout << setw(1) << j;

for (j = (i - 1); j >= 1; j--)

cout << setw(1) << j;

cout << endl;

}

44. What is the output of the following code?

int num = 12;

while (num >= 0)

{

if (num % 5 == 0)

break;

cout << num << " ";

num = num - 2;

}

cout << endl;

Thanks

Explanation / Answer

22)

a--->(iii)26

b--->(iv)5

c--->(i)0

24)

int sum = 0;

int i;

for (i = 3; i < 100; i=i+3)

{

sum+= i;

}

cout <<"sum = "<<sum;

26)

11 19 30 49

28)

3 -2 -2 -8

30)

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