Двумерный динамический массив C++

[Joesidorov]

Привет всем!!!

код работает, но надо чтобы когда пользовател выбрал ("If you want to have data automatically, Enter 2 " ) ему было возможност ввисти Диапазон массива. Как ето лучше сделать? Спасибо ранее за помощь!!!!

#include <iostream>
#include <time.h>
#include <stdlib.h>

using namespace std;

int main()
{
	int option, m, n;
	cout << "Enter row size: ";
	cin >> n;
	cout << "Enter columm size: ";
	cin >> m;
	cout << endl << "Enter Your Choice: " << endl << endl;
	cout << "If you want to enter data yourself, Enter 1 " << endl << endl;
	cout << "If you want to have data automatically, Enter 2 " << endl;
	cout << ">>> ";
	cin >> option;

	int **pp = new int*[n];
	for (int i = 0; i < n; i++)
		pp[i] = new int[m];

	if (option == 1)
	{
		cout << "Enter element: " << endl;
		for (int i = 0; i < n; i++)
			for (int j = 0; j < m; j++)
				cin >> pp[i][j];
		cout << endl;

		for (int i = 0; i < n; i++)
		{
			for (int j = 0; j < m; j++)
				cout << pp[i][j] << ' ';
			cout << endl;
		}
		for (int i = 0; i < n; i++) {
			int mult = 1;
			for (int j = 0; j < m; j++)
			{
				if (pp[i][j]<0)
					mult *= pp[i][j];
				else
					mult = 0;
			}
			if (mult)
			{
				cout << "Sum: " << mult << ' ';
				cout << endl;
			}
		}
	}
	else if (option == 2)
	{
		srand(time(NULL));
		cout << "Generated array: " << endl;
		for (int i = 0; i < n; i++) {
			for (int j = 0; j < m; j++) cout << (pp[i][j] = rand() % 100) << ' ';
			cout << endl;
		}
	}

	for (int i = 0; i < n; i++)
		delete pp[i];

	delete[] pp;

	cout << endl;
	system("pause");
	return 0;
}

[Stilet]

int main()
{
	int option, m=rand()%100+10, n=rand()%100+10;
	cout << endl << "Enter Your Choice: " << endl << endl;
	cout << "If you want to enter data yourself, Enter 1 " << endl << endl;
	cout << "If you want to have data automatically, Enter 2 " << endl;
	cout << ">>> ";
	cin >> option;
if(option==1){
	cout << "Enter row size: ";
	cin >> n;
	cout << "Enter columm size: ";
	cin >> m;
}
...

Сойдет?

[Joesidorov]

когда нажимаешь 2 (If you want to have data automatically, Enter 2)

#include <iostream>
#include <time.h>
#include <stdlib.h>

using namespace std;

int main()
{
	int option, m = rand() % 100 + 10, n = rand() % 100 + 10;
	cout << endl << "Enter Your Choice: " << endl << endl;
	cout << "If you want to enter data yourself, Enter 1 " << endl << endl;
	cout << "If you want to have data automatically, Enter 2 " << endl;
	cout << ">>> ";
	cin >> option;

	int **pp = new int*[n];
	for (int i = 0; i < n; i++)
		pp[i] = new int[m];


	if (option == 1) {
		cout << "Enter row size: ";
		cin >> n;
		cout << "Enter columm size: ";
		cin >> m;

	
		cout << "Enter element: " << endl;
		for (int i = 0; i < n; i++)
			for (int j = 0; j < m; j++)
				cin >> pp[i][j];
		cout << endl;

		for (int i = 0; i < n; i++)
		{
			for (int j = 0; j < m; j++)
				cout << pp[i][j] << ' ';
			cout << endl;
		}
		for (int i = 0; i < n; i++) {
			int mult = 1;
			for (int j = 0; j < m; j++)
			{
				if (pp[i][j]<0)
					mult *= pp[i][j];
				else
					mult = 0;
			}
			if (mult)
			{
				cout << "Sum: " << mult << ' ';
				cout << endl;
			}
		}
	}
	else if (option == 2)
	{
		cout << "Generated array: " << endl;
		for (int i = 0; i < n; i++) {
			for (int j = 0; j < m; j++) cout << pp[i][j] << ' ';
			cout << endl;
		}
	}

	for (int i = 0; i < n; i++)
		delete pp[i];

	delete[] pp;

	cout << endl;
	system("pause");
	return 0;
}

[Stilet]

Ну уменьш кол-во генерируемого. Поставь там rand()%10+1;