arrays_task_17.cpp

#include <iostream>

using namespace std;

int main()
{
	const int size = 10;
	
	int a[size], b[size], x, imax = 0, imin = 0;
	
	for(int i = 0; i < size; i++)
	{
		cin >> x;
		
		a[i] = x;
		
		if(a[i] >= a[imax])
			imax = i;

		if(a[i] <= a[imin])
			imin = i;
	}
	
	for(int i = 0; i < size; i++)
	{
		if(a[i] >= 0)
		{
			b[i] = a[i] * (a[imin] * a[imin]);
		}
		else
		{
			b[i] = a[i] * (a[imax] * a[imax]);
		}
		
		cout << b[i] << " ";
	}
	
	return 0;
}

matrices_task_1.cpp

#include <iostream>

using namespace std;

//#define DEF {{1,2,3,4}, {1,2,3,4}, {1,2,3,4}, {1,2,3,4}}

int main()
{
	const int size = 4;
	
	int a[size][size];
	
	int i=0, j=0, k = 0;
	
	int sum_main = 0, sum_sub = 0, sum_un_main = 0, sum_on_main = 0, sum_un_sub = 0, sum_on_sub = 0;
	
	for(i = 0; i < size; i++)
		for(j = 0; j < size; j++)
			cin>> a[i][j];
			
	for(i = 0; i < size; i++)
		for(j = 0; j < size; j++)
		{
			if(i == j)
			{
				sum_main += a[i][j];
				
				for(k = i-1; k >= 0; k--)
				{
					sum_un_main += a[k][j];
				}
				k =0;
				
				for(k = i+1; k < size; k++)
				{
					sum_on_main += a[k][j];
				}
				k=0;
			}
			
			if(i + j == size - 1)
			{
				sum_sub += a[i][j];
				
				for(k = i-1; k >= 0; k--)
				{
					sum_un_sub += a[k][j];
				}
				k =0;
				
				for(k = i+1; k < size; k++)
				{
					sum_on_sub += a[k][j];
				}
				k=0;
			}
		}
		
	
		
	cout <<"Main sum: "<<sum_main <<endl;
	cout <<"Sub sum: "<< sum_sub <<endl;
	cout << endl;
	cout <<"Sum under main: "<< sum_un_main << endl;
	cout <<"Sum on main: "<< sum_on_main << endl;
	cout <<"Sum under sub: "<< sum_un_sub << endl;
	cout <<"Sum on sub: "<< sum_on_sub << endl;
	
	return 0;
}