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学ぶ Manipulations with Arrays | Intro to Arrays
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Introduction to C++
セクション 5.  3
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bookManipulations with Arrays

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You can also use for loops in arrays to find the sum of all elements:

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int numbers[4] = {42, 12, 56, 98}; int sum = 0; for (int i = 0; i <= 3; i++) { sum += numbers[i]; } cout << sum;
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Here the variable sum will store the sum of all elements, initially, it’s equal to 0. Then we iterate through the array using for loops and add each element to the variable sum.

You can also store in arrays the data from the user:

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int numbers[4]; int sum = 0; for (int i = 0; i <= 3; i++) { cout << "Type the number: "; cin >> numbers[i]; sum += numbers[i]; }
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Find the multiplication of 10 elements printed by the user. Store the result in the variable mul. Pay attention that the initial value of the variable mul is 1, since multiplication by 1 does not affect the result.

  1. Take input from the user.
  2. Multiply the user's number and the variable mul. Store the result in the variable mul.
  3. Print the variable mul.

Please, don’t forget to type the semicolon ; at the end of the lines.

解答

Switch to desktop実践的な練習のためにデスクトップに切り替える下記のオプションのいずれかを利用して、現在の場所から続行する
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セクション 5.  3
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