1)Сделать массив размером 10! Заполнить его рандомными числами! Вывести наибольшее число

1:
include lt;iostreamgt;
include lt;ctimegt;

int main()

  srand(time(NULL));

  const int arraySize = 10;
  int mainArray[arraySize];  
  
  for (int i = 0; i lt; arraySize; i++)
    mainArray[i] = rand() % 1000;
  
  int maxNum = mainArray[0];
  for (int i = 0; i lt; arraySize; i++)
    if (mainArray[i] gt; maxNum)
      maxNum = array[i];
  
  std::cout lt;lt; maxNum lt;lt; std::endl;

  system("pause");
  return 0;

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2:
include lt;iostreamgt;
include lt;cmathgt;

using namespace std;

int main()

  float
    a_coef,
    b_coef,
    c_coef;

  cout lt;lt; "Input the coefficients (a * x^2 + b * x + c): ";
  cin gt;gt; a_coef gt;gt; b_coef gt;gt; c_coef;
  
  float res1, res2;
  
  res1 = (-b_coef + sqrt(b_coef * b_coef - 4 * a_coef * c_coef)) / (2 * a_coef);
  res2 = (-b_coef - sqrt(b_coef * b_coef - 4 * a_coef * c_coef)) / (2 * a_coef);
  
  cout lt;lt; res1 lt;lt; "; " lt;lt; res2 lt;lt; endl;

  system("pause");
  return 0;

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3:
include lt;iostreamgt;
include lt;ctimegt;

int main()

  srand(time(NULL));
  int
    unknownNumber = rand() % 100 - 50,
    attempts = 0,
    inputtedNumber;

  while (true)
 
    attempts++;

    cout lt;lt; "Input the number: ";
    cin gt;gt; inputtedNumber;
    
    if (inputtedNumber != unknownNumber)
      cout lt;lt; "Incorrect answer! Try again!" lt;lt; endl;
    else
      break;
 

  cout lt;lt; "Attempts: " lt;lt; attempts;
  
  system("pause");
  return 0;