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Programming concepts

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Question 125

The program below calculates and outputs the sum of the integers from 1 to 6.

int sum = 0;
for (int i = 1; i <= 6; i++)
{
    sum = sum + i;
}
Console.WriteLine(sum);

The program needs to be modified so that it also calculates and outputs the sum of the squares of these integers (i.e. 12+22+32+42+52+621^2 + 2^2 + 3^2 + 4^2 + 5^2 + 6^212+22+32+42+52+62).

Select the option that shows the correct modified program.

A
int sum = 0;
int sumSq = 0;
for (int i = 1; i <= 6; i++)
{
    sum = sum + i;
    sumSq = sumSq + (sum * sum);
}
Console.WriteLine(sum);
Console.WriteLine(sumSq);
B
int sum = 0;
int sumSq = 0;
for (int i = 1; i <= 6; i++)
{
    sum = sum + i;
    sumSq = sum * sum;
}
Console.WriteLine(sum);
Console.WriteLine(sumSq);
C
int sum = 0;
int sumSq = 0;
for (int i = 1; i <= 6; i++)
{
    sum = sum + i;
    sumSq = sumSq + sum * i;
}
Console.WriteLine(sum);
Console.WriteLine(sumSq);
D
int sum = 0;
int sumSq = 0;
for (int i = 1; i <= 6; i++)
{
    sum = sum + i;
    sumSq = sumSq + (i * i);
}
Console.WriteLine(sum);
Console.WriteLine(sumSq);
Markscheme

Programming concepts Questions

  1. GCSE
  2. /Computer Science
  3. /Programming concepts

298 exam-style questions on AQA GCSE Computer Science Programming concepts. Each one has a worked solution and a mark scheme showing where the marks go.

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