lab6

#include <string>
#include <iostream>
#include <ctime>
#include <iomanip>
using namespace std;

int getInteger(const char* text)
{
	bool isError = false;
	std::string s;
	int number = 0;
	do {
		isError = false;
		std::cout << text << std::endl;
		std::cin >> s;
		for (size_t i = 0; i < s.length(); i++)
		{
			if ((int)(s[i]) < 0 || !isdigit(s[i]))  //if (!(s[i] >= '0' && s[i] <= '9'))
			{
				isError = true;
				break;
			}
		}
		if (!isError)
			number = atoi(s.c_str());
	} while (isError || number <= 0);

	return number;
}

void task5()
{
	cout << "TASK 5" << endl;
	const int N = 12;
	int arrNum[N];
	for (int i = 0; i < N ; i++)
	{
		cout << "Element " << setw(2) <<  (i+1) << "= "<< setw(2) << (arrNum[i] = i + 1) << endl;
	}
	cout << endl;
}

void task40()
{
	cout << "TASK 40" << endl << endl;
	const int arrSize = 20;
	int arr[arrSize];

	cout << "Before: ";
	for (int i = 0; i <arrSize; i++)
	{

		cout << setw(3) << (arr[i] = rand() % 10 + 1);
	}

	arr[rand() % arrSize] = 0;
	cout << endl << endl;


	cout << " After: ";
	for (int i = 0; i < arrSize; i++)
	{
		cout  << setw(3) << arr[i];

		if (arr[i] == 0)
		{
			
		   
			break;
			
		}
	}

	

	cout << endl << endl << endl;
}
void task75()
{
	cout << "TASK 75 " << endl;

	int size = getInteger("Input size of array");

	int *arr = new int[size];
	for (int i = 0; i < size - 1; i++)
	{
		arr[i] = rand() % 98 + 1;
		cout << arr[i] ;

		if (arr[i] == 77)
		{
			cout << "(+)";
		}
		cout << "\t";
	}
		cout << (arr[(size-1)] = 100) << endl;
		cout << endl;

		int i = 0;
		while (arr[i] != 77 && i != size )

		{
			i++;
		}

		i == size ? cout << endl << "Number 77 none" : cout << endl << "Index of number 77 is: " << i;
			
		cout << endl << endl;



	
}

void task110()
{
	cout << "TASK 110" << endl;
	int sizeArr = getInteger("Input size of array");
	cout << endl;
	int* integer = new int[sizeArr];

	for (int i = 0; i < sizeArr; i++)
	{
		integer[i] = rand() % 100;
		cout << integer[i] << "\t";
	}
	cout <<  endl;
	again:
	int c = getInteger("Enter place of array");//с - место смены значения массива
	if (c > sizeArr)  goto again;
	cout << endl;

	cout << "First element * last element: " << (integer[(c-1)] = integer[0] * integer[(sizeArr-1)]) << endl << endl;
	for (int i = 0; i < sizeArr; i++)
	{
		
		if (i == ((c-1)))
		{
			cout << integer[(c - 1)] << "(+)" << "\t";
			
		
		}

		else
		{
			cout << integer[i] << "\t";
		}
	}

	cout << endl << endl;
}
void task145()
{
	cout << "TASK 145" << endl;

	const int arrSize = 10;

	int numsOfAnimals[arrSize];

	string animals[arrSize] = { "macaque", "owl","crane","panda","fish","white-breasted bear","raccoon dog","serau","hares","seagulls" }; //array of animals


	int listeners = getInteger("Enter number of listeners");
	string* numb = new string[listeners];

	//заполняем массив ответами
	for ( int i = 0; i < listeners; i++)
	{
		
		cout << "Listener " << i+1 <<  ", answer: " << (numb[i] = animals[(rand() % 10)]) << endl;
	}

	cout << endl;

	for (int n  = 0; n < arrSize; n++) numsOfAnimals[n] = 0;//счетчик количества животных (изначально заполняем нулями)
	

	//ищим для каждого слушателя его ответ и записываем в счетчик
	for (int i = 0; i < listeners; i++)
	{
		for (int u = 0; u < arrSize; u++)
		{
			if (numb[i] == animals[u])
			{
				numsOfAnimals[u]++;//счетчик количества животных(заполняем)
			}
			
		}
	}

	cout << endl;

	int theOftenAnimal = 0;//наиболее частое животное
	for (int i = 0; i < arrSize; i++)
	{
		if (numsOfAnimals[i] > theOftenAnimal)// ищем найболее частых животных
		{
			theOftenAnimal = numsOfAnimals[i];
		}
	}
	for (int i = 0; i < arrSize; i++)
	{
		if (numsOfAnimals[i] == theOftenAnimal) cout << "Most meeting animal(s) is: " << animals[i] << " | " << numsOfAnimals[i] <<"| " <<  double(numsOfAnimals[i])*100/double(listeners)<< "%" << endl;// проверяем и ввыводим найболее частых
	}


	cout << endl << endl;
}

void task180()
{
	cout << "TASK 180 " << endl;

	int arrSize = getInteger("Enter size of array");
	double* array = new double[arrSize];
	cout << endl;

	for (int a = 0; a < arrSize; a++)
	{
		cout << "Number:" << setw(2) << (a + 1) << setw(2) << "= " << setw(2) << (array[a] = 8 - rand() % 15  );
		if (array[a] > 0)
		{
			cout << "(+)";
		}
		cout << endl;
	}


	int count = 0;//счетчик положительных чисел
	int countMax = 0;// счетчик наибольшего количества последовательно расположенных положительных чисел

	for ( int a = 0;  a < arrSize;  a++)
	{
		if (array[a] > 0)
		{
			
			count++;
		}
		else
		{
			if (count > countMax)
			{
				countMax = count;
			}
			    count = 0;
		}

	}

		cout << "Largest sequence of positive numbers: " << countMax << endl;
		cout << endl << endl;
}


int main()
{
	
	srand(time(0));
	int c = 0;
	while (c != 1)
	{
		int inputnumber = getInteger("Choose task ( 5,  40,  75, 110, 145, 180): ");
		cout << endl;
		switch (inputnumber)
		{
		case 5:
			task5();
			break;
		case 40:
			task40();
			break;
		case 75:
			task75();
			break;
		case 110:
			task110();
			break;
		case 145:
			task145();
			break;
		case 180:
			task180();
			break;
		}
		

	}


}