Tasks: One-dimensional arrays C ++

Getting to the solution of tasks, read articles Arrays in C++ and The random number generator rand(), if you have not read them. Try to address the proposed tasks independently and watch our decisions only in extremis.

1. Create an array of type int on 10 elements and fill it with random numbers from 7 to 14. After filling overwrite all numbers, who for more than ten: from the stored value to take away 10. For example the number is stored in the cell 12: 12 – 10 = 2. Write to this cell 2 Writing the new value, use composite(combined) statements.

View code

[crayon-6768cbba926df674964218/]

Для получения случайного числа в каком-либо диапазоне можно воспользоваться формулой: a + rand() % (b – a + 1). a – the minimum number in the range, b – максимальная. Применив к нашей задаче получим:

[crayon-6768cbba926e9840051833/]

In strings 21 – 28 перебираем значения массива и отнимаем 10 от значений которые больше десяти.

2. To fill an array of elements 50 odd numbers from 1 to 99. (use the operation remainder of the division, to check on the number of parity)

View code

[crayon-6768cbba926eb024579357/]

First, write down the generated random number i-th cell array (string 18). Next, check the value of the parity (the if block – strings 19 – 23). If an even – then on the next iteration of the loop, random number will again be written in the same cell and checked for parity. If the odd – the number will be displayed on the screen and the value of the loop counter is increased by one unit.

3. Declare three arrays. The first two to fill with random values from 10 to 30. In the third elements of the array to record the amount of the corresponding elements of the first two sets. (in the third cell zero – the sum of zero cells first and second arrays, and so on). Then, find the arithmetic mean of the elements of the third array, the maximum value and minimum value, which it holds.

View code

#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;

int main()
{
	setlocale(LC_ALL, "rus");

	const int SIZE = 10;

	int ourArr[SIZE] = {};
	int ourArr2[SIZE] = {};
	int ourArr3[SIZE] = {};
	
	srand(time(NULL));
	// заполняем первые два массива
	cout << "Массив ourArr:  ";
	for(int i = 0; i < SIZE; i++)
	{
		ourArr[i] = 10 + rand() % 21;
		cout << ourArr[i] << " | ";
	}
	cout << endl << endl;

	cout << "Массив ourArr2: ";
	for(int i = 0; i < SIZE; i++)
	{
		ourArr2[i] = 10 + rand() % 21;
		cout << ourArr2[i] << " | ";
	}
	cout << endl << endl;

	// заполняем третий массив
	cout << "Массив ourArr3: ";
	for(int i = 0; i < SIZE; i++)
	{
		ourArr3[i] = ourArr[i] + ourArr2[i];
		cout << ourArr3[i] << " | ";
	}
	cout << endl << endl;

	// ищем среднее арифм., минимум и максимум
	int averageValue = 0;
	int sum = 0;
	int minValue = ourArr3[0];
	int maxValue = ourArr3[0];

	for(int i = 0; i < SIZE; i++)
	{
		sum += ourArr3[i];

		if(ourArr3[i] < minValue)
		{
			minValue = ourArr3[i];
		}

		if(ourArr3[i] > maxValue)
		{
			maxValue = ourArr3[i];
		}
	}

	averageValue = sum / SIZE;

	cout << "Среднеe арифметическое = " << averageValue << endl;
	cout << "Минимальное значение   = " << minValue << endl;
	cout << "Максимальное значение  = " << maxValue << endl;
	cout << endl << endl;

return 0;
}

#include <iostream>

#include <ctime>

#include <cstdlib>

using namespace std;

int main()

{

setlocale(LC_ALL, "rus");

const int SIZE = 10;

int ourArr[SIZE] = {};

int ourArr2[SIZE] = {};

int ourArr3[SIZE] = {};

srand(time(NULL));

// заполняем первые два массива

cout << "Массив ourArr: ";

for(int i = 0; i < SIZE; i++)

{

ourArr[i] = 10 + rand() % 21;

cout << ourArr[i] << " | ";

}

cout << endl << endl;

cout << "Массив ourArr2: ";

for(int i = 0; i < SIZE; i++)

{

ourArr2[i] = 10 + rand() % 21;

cout << ourArr2[i] << " | ";

}

cout << endl << endl;

// заполняем третий массив

cout << "Массив ourArr3: ";

for(int i = 0; i < SIZE; i++)

{

ourArr3[i] = ourArr[i] + ourArr2[i];

cout << ourArr3[i] << " | ";

}

cout << endl << endl;

// ищем среднее арифм., минимум и максимум

int averageValue = 0;

int sum = 0;

int minValue = ourArr3[0];

int maxValue = ourArr3[0];

for(int i = 0; i < SIZE; i++)

{

sum += ourArr3[i];

if(ourArr3[i] < minValue)

{

minValue = ourArr3[i];

}

if(ourArr3[i] > maxValue)

{

maxValue = ourArr3[i];

}

averageValue = sum / SIZE;

cout << "Среднеe арифметическое = " << averageValue << endl;

cout << "Минимальное значение = " << minValue << endl;

cout << "Максимальное значение = " << maxValue << endl;

cout << endl << endl;

return 0;

}

To find the arithmetic mean of the third array, we calculate the sum of all its components. It accumulates in the variable sum(line 51). variablesminValue andmaxValue assign the value of the first element of the array (strings 46, 47). In strings 53 – 61 each element is compared with the, that store these variables in the case of the conditions if blocks are overwritten. So we find the sum of a single loop, the minimum and maximum value. In string 64 calculate the arithmetic mean: averageValue = sum / SIZE;

[crayon-6768cbba926ed808229029/]

113 thoughts on “Tasks: One-dimensional arrays C ++”

sid says:
19.02.2017 at 07:33
sorry!for not properly a question, there is a solution to 3 her task by one-dimensional array, where you can display the code, so that you can check and point out flaws?
Reply
1. Olej says:
  19.02.2017 at 15:02
  What for?
  This is not an elementary school, no one to watch your code will not be.
  And the comments here are not adapted and distort code, if you enter it here.
  A criterion of code quality for you always must be of execution program: if they comply with the conditions imposed, then everything is fine.
  Reply
  1. Denis says:
    24.03.2017 at 15:33
    the university is looking code
  2. Oleg says:
    28.02.2018 at 20:22
    A typical cattle-programmer.
2. Bauk says:
  06.03.2018 at 11:03
  ideone.com
  Reply
sid says:
19.02.2017 at 20:02
ATP for an answer.
Reply

Tell me please, what's my mistake (outputs the minimum value 0)

int main()
{
	setlocale(0, "");
	
	int randomDigits[10]{};
	int randomDigits_2[10]{};
	int randomDigits_3[10]{};
	int arithmeticAverage = 0;
	int minValue = randomDigits_3[0];
	int maxValue = randomDigits_3[0];
	srand(time(NULL));

	for (int i = 0; i < 10; i++)
	{
		randomDigits[i] = 10 + rand() % 21;
		randomDigits_2[i] = 10 + rand() % 21;
		randomDigits_3[i] = randomDigits[i] + randomDigits_2[i];
		arithmeticAverage += randomDigits_3[i];
		if (randomDigits_3[i]  maxValue)
		{
			maxValue = randomDigits_3[i];
		}
		cout <<randomDigits[i]<<"  +  "<<randomDigits_2[i]<<"  =  "<< randomDigits_3[i] << "          "<<arithmeticAverage<< endl;
		
		
	}

	cout << "\n\n Среднее арифметическое = " << arithmeticAverage / 10 << endl;
	cout << " минимальное значение = " << minValue << endl;
	cout << " максимальное значение = " << maxValue << endl;
	


	system("pause");
	return 0;

}

int main()

{

setlocale(0, "");

int randomDigits[10]{};

int randomDigits_2[10]{};

int randomDigits_3[10]{};

int arithmeticAverage = 0;

int minValue = randomDigits_3[0];

int maxValue = randomDigits_3[0];

srand(time(NULL));

for (int i = 0; i < 10; i++)

{

randomDigits[i] = 10 + rand() % 21;

randomDigits_2[i] = 10 + rand() % 21;

randomDigits_3[i] = randomDigits[i] + randomDigits_2[i];

arithmeticAverage += randomDigits_3[i];

if (randomDigits_3[i] maxValue)

{

maxValue = randomDigits_3[i];

}

cout <<randomDigits[i]<<" + "<<randomDigits_2[i]<<" = "<< randomDigits_3[i] << " "<<arithmeticAverage<< endl;

}

cout << "\n\n Среднее арифметическое = " << arithmeticAverage / 10 << endl;

cout << " минимальное значение = " << minValue << endl;

cout << " максимальное значение = " << maxValue << endl;

system("pause");

return 0;

}

I found another way)

int main()
{
	setlocale(0, "");
	
	int randomDigits[10]{};
	int randomDigits_2[10]{};
	int randomDigits_3[10]{};
	int arithmeticAverage = 0;
	int minValue = randomDigits_3[0];
	int maxValue = randomDigits_3[0];
	srand(time(NULL));

	for (int i = 0; i < 10; i++)
	{
		randomDigits[i] = 10 + rand() % 21;
		randomDigits_2[i] = 10 + rand() % 21;
		randomDigits_3[i] = randomDigits[i] + randomDigits_2[i];
		arithmeticAverage += randomDigits_3[i];
		if (randomDigits_3[i]  randomDigits_3[i-1])
		{
			maxValue = randomDigits_3[i];
		}
		cout <<randomDigits[i]<<"  +  "<<randomDigits_2[i]<<"  =  "<< randomDigits_3[i] << "          "<<arithmeticAverage<< endl;
		
		
	}

	cout << "\n\n Среднее арифметическое = " << arithmeticAverage / 10 << endl;
	cout << " минимальное значение = " << minValue << endl;
	cout << " максимальное значение = " << maxValue << endl;
	


	system("pause");
	return 0;

}

int main()

{

setlocale(0, "");

int randomDigits[10]{};

int randomDigits_2[10]{};

int randomDigits_3[10]{};

int arithmeticAverage = 0;

int minValue = randomDigits_3[0];

int maxValue = randomDigits_3[0];

srand(time(NULL));

for (int i = 0; i < 10; i++)

{

randomDigits[i] = 10 + rand() % 21;

randomDigits_2[i] = 10 + rand() % 21;

randomDigits_3[i] = randomDigits[i] + randomDigits_2[i];

arithmeticAverage += randomDigits_3[i];

if (randomDigits_3[i] randomDigits_3[i-1])

{

maxValue = randomDigits_3[i];

}

cout <<randomDigits[i]<<" + "<<randomDigits_2[i]<<" = "<< randomDigits_3[i] << " "<<arithmeticAverage<< endl;

}

cout << "\n\n Среднее арифметическое = " << arithmeticAverage / 10 << endl;

cout << " минимальное значение = " << minValue << endl;

cout << " максимальное значение = " << maxValue << endl;

system("pause");

return 0;

}

baha says:
22.03.2017 at 22:45
what a moron I…
Reply

#include "stdafx.h"
#include 
#include 
using namespace std;

int main()
{
	setlocale(LC_ALL, "rus");
	srand(time(NULL));
	const int SIZE = 3;
	int Arr1[SIZE];
	int Arr2[SIZE];
	int Arr3[SIZE];
	cout << "1-й:" << "\t2-й:" << "\t3-й:" << endl;
	for (int i = 0; i < SIZE; i++)
	{
		Arr1[i] = rand() % 20 + 10;
		Arr2[i] = rand() % 20 + 10;
		Arr3[i] = Arr1[i] + Arr2[i];
		cout << Arr1[i] << "\t" << Arr2[i] << "\t" << Arr3[i] << endl;
	}
	float avg = 0; 
	int max = Arr3[0];
	int min = Arr3[0];
	for (int i = 0; i  max)
		{
			max = Arr3[i];
		}
		else if (Arr3[i] < min)
		{
			min = Arr3[i];
		}
	}
	cout << "\n\t\t Минимальное значение в массиве №3: " << min << endl;
	cout << "\t\t Максимальное значение в массиве №3: " << max << endl;
	cout << "\t\t Среднее арифм. значение в массиве №3: " << avg / SIZE << endl;
	return 0;
}

#include "stdafx.h"

#include

using namespace std;

int main()

{

setlocale(LC_ALL, "rus");

srand(time(NULL));

const int SIZE = 3;

int Arr1[SIZE];

int Arr2[SIZE];

int Arr3[SIZE];

cout << "1-й:" << "\t2-й:" << "\t3-й:" << endl;

for (int i = 0; i < SIZE; i++)

{

Arr1[i] = rand() % 20 + 10;

Arr2[i] = rand() % 20 + 10;

Arr3[i] = Arr1[i] + Arr2[i];

cout << Arr1[i] << "\t" << Arr2[i] << "\t" << Arr3[i] << endl;

}

float avg = 0;

int max = Arr3[0];

int min = Arr3[0];

for (int i = 0; i max)

{

max = Arr3[i];

}

else if (Arr3[i] < min)

{

min = Arr3[i];

}

cout << "\n\t\t Минимальное значение в массиве №3: " << min << endl;

cout << "\t\t Максимальное значение в массиве №3: " << max << endl;

cout << "\t\t Среднее арифм. значение в массиве №3: " << avg / SIZE << endl;

return 0;

}

Anastasia says:
30.07.2017 at 02:37
When we are looking for an average value, This same float? If that, then 3 the task bug. Although she is not significant, but I think, it is not a good habit to round))
Reply
1. Olej says:
  17.08.2017 at 12:38
  This rough error:
  – averageValue variable must be declared as a float / double (better double);
  – averageValue expression calculation should be rewritten as, to calculate with real values, like this:
  averageValue = (double)sum / SIZE;
  Reply

#include 
#include 
#include 
#include 
#include 

using namespace std;

int main()
{
	setlocale(0, "Russian");
	int mas[50];
	const int max = 99;
	const int min = 1;

	srand(time(NULL));

	for (int i = 0; i < 50; i++)
	{
		while ((mas[i] % 2 == 0))
		mas[i] = min + rand() % (max - min + 1);
	}

	for (int i = 0; i < 50; i++)
	{
		cout << "Значение массива " << i << " равно" << mas[i] << endl;
	}

	system("pause");
	return 0;
}

#include

using namespace std;

int main()

{

setlocale(0, "Russian");

int mas[50];

const int max = 99;

const int min = 1;

srand(time(NULL));

for (int i = 0; i < 50; i++)

{

while ((mas[i] % 2 == 0))

mas[i] = min + rand() % (max - min + 1);

}

for (int i = 0; i < 50; i++)

{

cout << "Значение массива " << i << " равно" << mas[i] << endl;

}

system("pause");

return 0;

}

Tops says:
14.11.2017 at 02:09
2 the problem is not resolved correctly?
that's the same
#include
using namespace std;
int main(int argc, const char * argv[]){
int arr[50] = {};
for (int i = 0; i<50; i ){
do
arr[i] = 1 + rand() % 100;
while (arr[i] % 2 !=1);
cout << arr[i] << " ";
}
cout << endl;
system("pause");
return 0;
}
Reply

Tasks: One-dimensional arrays C ++

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