Question

All QUESTIONS, PLEASE

5.    What is the output of the following code:

int product = 1, i = 6;

while (i < 9)

{

      product = product * i;

      i++;

}

cout << “i is : ” << i << endl;

cout << “product is : ” << product << endl;

6.    What is the output of the following code:

int product = 1, i = 6;

     do

{

      product = product * i;

      i++;

} while (i < 9);

cout << “i is : ” << i << endl;

cout << “product is : ” << product << endl;

7.    What is the output of the following code:

int product = 1, i = 6;

     do

{

      product = product * i;

      i++;

} while (product < 9);

cout << “i is : ” << i << endl;

cout << “product is : ” << product << endl;

8.    What is the output of the following code:

int product = 0, i = 6;

     do

{

      product = product * i;

      i++;

} while (i < 9);

cout << “i is : ” << i << endl;

cout << “product is : ” << product << endl;

9.    What is the output of the following code:

int i = 6;

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

         cout << “Hello” << endl;

cout << “Done!” << endl;

10. What is the output of the following code:

int i = 6;

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

         cout << “Hello” << endl;

cout << “Done!” << endl;

11. What is the output of the following code:

int i = 6;

for ( i = 1; i < 3; i++)

         cout << “Hello” << endl;

cout << “Done!” << endl;

12. What is the output of the following code:

int sum = 0, i = 14;

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

{

      sum = sum + i;

}

cout << “i is : ” << i << endl;

cout << “sum is : ” + sum);

13. What is the output of the following code:

int sum = 0, i = 14;

for ( i = 0; i < 40; i++)

{

      if (i % 10 == 0)

         sum = sum + i;

}

cout << “i is : ” << i << endl;

cout << “sum is : ” + sum);

no termination condition

14. What is the output of the following code:

int sum = 0, i = 14;

for ( i = 0; i < 10; i++)

{

      i++;

      sum = sum + i;

}

cout << “i is : ” << i << endl;

cout << “sum is : ” + sum);

15. What is the error in the following code:

int product = 1, i = 6;

     do

{

      product = product * i;

      i++;

} while (product < 9)

cout << “i is : ” << i << endl;

cout << “product is : ” << product << endl;

Answer 1

5.    What is the output of the following code:

int product = 1, i = 6;

while (i < 9)

{

      product = product * i;

      i++;

}

cout << “i is : ” << i << endl;

cout << “product is : ” << product << endl;

output:

i is 9

product is : 336 because it loops from i=6 to 9 and every iteration it multiplies i with product

sp product = 6*7*8 = 336

6.    What is the output of the following code:

int product = 1, i = 6;

do

{

      product = product * i;

      i++;

} while (i < 9);

cout << “i is : ” << i << endl;

cout << “product is : ” << product << endl;

the output will remain same as previous question:

i is : 9

product is: 336 as we are just using do while loop instead of for loop

7.    What is the output of the following code:

int product = 1, i = 6;

do

{

      product = product * i;

      i++;

} while (product < 9);

cout << “i is : ” << i << endl;

cout << “product is : ” << product << endl;

Output:

i is : 8

product is : 42

because when loop executes when i is 6 product is 6 loop continues, then i=7 product is 42 i becomes 8 but product<9 becomes false, so after loop terminates i is 8 and product is 42

8.    What is the output of the following code:

int product = 0, i = 6;

do

{

      product = product * i;

      i++;

} while (i < 9);

cout << “i is : ” << i << endl;

cout << “product is : ” << product << endl;

output

i is : 9

product is : 0

because we have initialized product as 0 and it will remain 0 as 0x anything is 0

9.    What is the output of the following code:

int i = 6;

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

         cout << “Hello” << endl;

cout << “Done!” << endl;

Ouptut:

Hello

Hello

Hello

Done!

because for loop runs 3 times and prints Hello on new line and then after for loop Done! is printed

10. What is the output of the following code:

int i = 6;

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

         cout << “Hello” << endl;

cout << “Done!” << endl;

Output:

Hello

Hello

Hello

Hello

Done!

because this time runs loop from 0 to 3 which is 4 times it prints Hello and after loop it prints Done!

11. What is the output of the following code:

int i = 6;

for ( i = 1; i < 3; i++)

         cout << “Hello” << endl;

cout << “Done!” << endl;

Output:

Hello

Hello

Done!

Because loop runs from 1 to 2 so it runs only 2 times and prints Hello and after loop it prints Done!

12. What is the output of the following code:

int sum = 0, i = 14;

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

{

      sum = sum + i;

}

cout << “i is : ” << i << endl;

cout << “sum is : ” + sum);

cout << “sum is : ” + sum); - if this is written correctly it will print the output otherwise it will be a compile time error as the syntax for cout is wrong.

Output:

i is: 5

Sum is: 10

because loop runs from 0 to 4 and sums all the numers which is 0+1+2+3+4 = 10

13. What is the output of the following code:

int sum = 0, i = 14;

for ( i = 0; i < 40; i++)

{

      if (i % 10 == 0)

         sum = sum + i;

}

cout << “i is : ” << i << endl;

cout << “sum is : ” + sum);

cout << “sum is : ” + sum); - if this is written correctly it will print the output otherwise it will be a compile time error as the syntax for cout is wrong.

Output:

i is: 40

Sum is: 60

because in every loop it will check if i is divisible by 10 if yes then it adds to sum so sum = 10 + 20 + 30 =60

14. What is the output of the following code:

int sum = 0, i = 14;

for ( i = 0; i < 10; i++)

{

i++;

sum = sum + i;

}

cout << “i is : ” << i << endl;

cout << “sum is : ” + sum);

cout << “sum is : ” + sum); - if this is written correctly it will print the output otherwise it will be a compile time error as the syntax for cout is wrong.

Output

i is : 10

Sum is : 25

because in every iteration i increases by 2 because we have written in loop i++ so

sum is 1 + 3 + 5 + 7 + 9 = 25

15. What is the error in the following code:

int product = 1, i = 6;

do

{

product = product * i;

i++;

} while (product < 9)

cout << “i is : ” << i << endl;

cout << “product is : ” << product << endl;

The error in the code is ; is missing after while conditon which is wrong syntax

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