Pull Request-Ivan Ivanov

.gitignore

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+################################################################################
+# This .gitignore file was automatically created by Microsoft(R) Visual Studio.
+################################################################################
+
+/.vs

Seminar01/sem1_solutions/1_allEx.cpp

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+#include <iostream>
+using namespace std;
+
+
+int main() {
+	////1
+	//cout << "Oh what\na happy day!\nOh yes,\nwhat a happy day!";
+
+	////2
+	//double s1 = 5.4*7.9;
+	//double p1 = (5.4+7.9) * 2;
+	//cout << "\nS = "<<s1;
+	//cout << "\nP = " << p1;
+	////3
+	//double lev;
+	//cout << "\n";
+	//cin >> lev;
+	//double dollar = lev * 0.56;
+	//double euro = lev * 0.51;
+	//cout << "\nDollar = " << dollar;
+	//cout << "\nEuro = " << euro;
+
+	////4
+	//cout << "\nPlease enter length and width of the rectangle:\n";
+	//double a, b;
+	//cin >> a>> b;
+	//double s2 = a * b;
+	//double p2 = (a + b) * 2;
+	//cout << "\nS = " << s2;
+	//cout << "\nP = " << p2;
+
+	////5
+	//int c, d;
+	//cin >> c >> d;
+	//cout << "\n";
+	//bool c_is_smaller = c < d;for
+	//cout <<"" << c_is_smaller;
+
+	////6
+	//int dividend, divisor;
+
+	//cout << "\nDividend: ";
+	//cin >> dividend;
+	//cout << "\nDivisor: ";
+	//cin >> divisor;
+	//cout << "\nThe quotient of the division is : " << (dividend / divisor);
+	//cout << "\nThe remainder of the division is : " << (dividend % divisor);
+
+	////7
+	//int apples, pears, bananas;
+	//cout << "Apples: ";
+	//cin >> apples;
+	//cout << "Pears: ";
+	//cin >> pears;
+	//cout << "Bananas: ";
+	//cin >> bananas;
+	//cout << "Pesho, don�t forget to buy " << apples << " apples, " << pears << " pears and " << bananas << " bananas!";
+
+
+	////8
+	//double r, length, S;
+	//cin >> r;
+	//length = 2 * 3.14159265 * r;
+	//S = 3.14159265 * r * r;
+
+	////9
+	//int a, b, c;
+	//cin >> a >> b >> c;
+
+	//double D = (b * b) - (4 * a * c);
+	//double x1, x2;
+
+	//x1 = (-b + sqrt(D)) / (2 * a);
+	//x2 = (-b - sqrt(D)) / (2 * a);
+	//cout << "x1 = " << x1 << ", x2 = " << x2;
+
+//	//10
+//	int a, b, save;
+//	cin >> a >> b;
+//	
+//	/*save = a;
+//	a = b;
+//	b = save;*/
+//	a += b;
+//	b = a - b;
+//	a -= b;
+//cout << a << " " << b;
+
+	////11
+	//int a, b;
+	//cin >> a >> b;
+	//bool is_a_bigger = a > b;
+	//cout<< is_a_bigger*a + 
+
+
+	////12
+	//int seconds,days,hours,minutes;
+	//cin >> seconds;
+	//days = seconds / 60 / 60 / 24;
+	//seconds -= days * 24 * 60 * 60;
+	//hours = seconds / 60 / 60;
+	//seconds -= hours * 60 * 60;
+	//minutes = seconds / 60;
+	//seconds -= minutes * 60;
+	//cout << days << " days, " << hours << " hours, " << minutes << " minutes and " << seconds << " seconds";
+
+
+	//13
+	cout << "Point1: ";
+	int x1, y1, x2, y2;
+	cin >> x1 >> y1;
+	cout << "\nPoint2:";
+	cin >> x2 >> y2;
+
+	double length = sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));
+	int x = length * 100;
+	cout << (double)x / 100.00 << std::endl;
+
+
+
+	//14
+	int n; std::cin >> n;
+	std::cout << n * (n + 1) / 2<<std::endl;
+
+}