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Vladimir [108]
3 years ago
6

Use the variables k and total to write a while loop that computes the sum of the squares of the first 50 counting numbers, and a

ssociates that value with total. Thus your code should associate 11 22 33 ... 4949 50*50 with total. Use no variables other than k and total.
Computers and Technology
1 answer:
Tems11 [23]3 years ago
3 0

Answer:

total = 0

k = 1

while k <= 50:

total += k**2

k += 1

print(total)

Explanation:

Note: There some errors in the question. The correct complete question is therefore provided before answering the question as follows:

Use the variables k and total to write a while loop that computes the sum of the squares of the first 50 counting numbers, and associates that value with total. Thus your code should associate 1*1 + 2*2 + 3*3 +... + 49*49 + 50*50 with total. Use no variables other than k and total.

The answer is now explained as follows:

# Initialize k which is the number of term

k = 1

# Initialize total which is the sum of squares

total = 0

# Loop as long as k is less than or equal to 50.

while (k <= 50):

# Add the square of k to total in order to increase it

total = total + k * k

# Increase the value of k by one.

k += 1

# Finally, output total

print (total)

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Write a program that grades arithmetic quizzes as follows: Ask the user how many questions are in the quiz. Ask the user to ente
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Answer:

The program in C++ is as follows:

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using namespace std;

int main(){

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   int answerkey[questions];

   cout<<"Enter answer keys: ";

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   int correct = 0;

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   for(int i = 0; i< questions; i++){

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Explanation:

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   int questions, answer;

Prompt to get the number of questions

   cout<<"Questions: ";

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   cin>>questions;

This declares the answerkey as an array

   int answerkey[questions];

Prompt to get the answer key

   cout<<"Enter answer keys: ";

This iteration gets the answer key for each question

<em>    for(int i = 0; i< questions; i++){</em>

<em>        cin>>answerkey[i];    }</em>

This initializes the number of correct answers to 0

   int correct = 0;

Prompt to get the enter the answers

   cout<<"Enter answers: ";

This iterates through the answer keys

   for(int i = 0; i< questions; i++){

This gets the answer to each question

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This compares the answer to the answer key of the question

       if(answer == answerkey[i]){

If they are the same, correct is incremented by 1

           correct++;        }    }

Print the number of correct answers

   cout<<"Correct answers: "<<correct<<endl;

Print the percentage of correct answers

   cout<<"Percentage correct : "<<(100 * correct)/questions<<"%";

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