Update sem.03

9 files changed, 268 insertions, 0 deletions

diff --git a/pract_SI/Pract. 03/Solutions/task1.cpp b/pract_SI/Pract. 03/Solutions/task1.cpp
new file mode 100644
index 0000000..ae955a8
--- /dev/null
+++ b/pract_SI/Pract. 03/Solutions/task1.cpp
@@ -0,0 +1,19 @@
+#include "pch.h"
+#include <iostream>
+
+using namespace std;
+
+int main()
+{
+	unsigned long long number;
+	cin >> number;
+
+	for (int i = 1; i <= number; i++)
+	{
+		for (int j = 1; j <= i; j++)
+			cout << j;
+		cout << endl;
+	}
+
+	return 0;
+}
diff --git a/pract_SI/Pract. 03/Solutions/task2.cpp b/pract_SI/Pract. 03/Solutions/task2.cpp
new file mode 100644
index 0000000..b3e970d
--- /dev/null
+++ b/pract_SI/Pract. 03/Solutions/task2.cpp
@@ -0,0 +1,17 @@
+#include <iostream>
+
+using namespace std;
+
+int main()
+{
+	unsigned long long number;
+	cin >> number;
+
+	for (unsigned long long x = 1, y = number; x < number; x++)
+	{
+		cout << "x = " << x << " "
+			 << "y = " << --y << endl;
+	}
+
+	return 0;
+}
diff --git a/pract_SI/Pract. 03/Solutions/task3.cpp b/pract_SI/Pract. 03/Solutions/task3.cpp
new file mode 100644
index 0000000..a6a6362
--- /dev/null
+++ b/pract_SI/Pract. 03/Solutions/task3.cpp
@@ -0,0 +1,22 @@
+#include<iostream>
+using namespace std;
+int main()
+{
+	 unsigned long long oldNumber, newNumber;
+
+	 cout << "Enter a positive number: ";
+	 cin >> oldNumber;
+
+	 oldNumber *= oldNumber;
+	 newNumber = 0;
+
+	 while (oldNumber != 0)
+	 {
+		  newNumber = newNumber * 10 + oldNumber % 10;
+		  oldNumber /= 10;
+	 }
+
+	 cout << newNumber << endl;
+
+	 return 0;
+}
\ No newline at end of file
diff --git a/pract_SI/Pract. 03/Solutions/task4.cpp b/pract_SI/Pract. 03/Solutions/task4.cpp
new file mode 100644
index 0000000..622b8a1
--- /dev/null
+++ b/pract_SI/Pract. 03/Solutions/task4.cpp
@@ -0,0 +1,21 @@
+#include<iostream>
+using namespace std;
+int main()
+{
+	 unsigned int m, n;
+	 cout << "Number of rows: ";
+	 cin >> m;
+	 cout << "Number of columns: ";
+	 cin >> n;
+
+	 for (unsigned int i = 1; i <= m * n; i++)
+	 {
+		  cout << i << " ";
+		  if (i % n == 0)
+		  {
+				cout << endl;
+		  }
+	 }
+
+	 return 0;
+}
\ No newline at end of file
diff --git a/pract_SI/Pract. 03/Solutions/task5.cpp b/pract_SI/Pract. 03/Solutions/task5.cpp
new file mode 100644
index 0000000..d6ac57c
--- /dev/null
+++ b/pract_SI/Pract. 03/Solutions/task5.cpp
@@ -0,0 +1,41 @@
+#include<iostream>
+using namespace std;
+int main()
+{
+	 unsigned short number, guess;
+	 unsigned int counter = 0;
+
+	 cout << "Enter a number between 0 and 100: ";
+	 cin >> number;
+	 if (number < 0 || number > 100)
+	 {
+		  cout << "Invalid input!\n";
+		  return 1;
+	 }
+
+	 do
+	 {
+		  ++counter;
+
+		  cout << "Guess " << counter << ": ";
+		  cin >> guess;
+		  if (guess < 0 || guess > 100)
+		  {
+				cout << "Invalid input!\n";
+				return 2;
+		  }
+
+		  if (guess < number)
+		  {
+				cout << "The number you are looking for is greater than your guess!\n";
+		  }
+		  else if (guess > number)
+		  {
+				cout << "The number you are looking for is less than your guess!\n";
+		  }
+	 } while (guess != number);
+
+	 cout << "You found the number in " << counter << " attempt(s)!\n";
+
+	 return 0;
+}
\ No newline at end of file
diff --git a/pract_SI/Pract. 03/Solutions/task6.cpp b/pract_SI/Pract. 03/Solutions/task6.cpp
new file mode 100644
index 0000000..8d0beac
--- /dev/null
+++ b/pract_SI/Pract. 03/Solutions/task6.cpp
@@ -0,0 +1,18 @@
+#include<iostream>
+using namespace std;
+int main()
+{
+	 unsigned int number = 0, input = 1;
+
+	 while(input != 0)
+	 {
+		  cout << "Enter a positive number: ";
+		  cin >> input;
+
+		  number ^= input;
+	 }
+
+	 cout << "The single number is " << number << endl;
+
+	 return 0;
+}
\ No newline at end of file
diff --git a/pract_SI/Pract. 03/Solutions/task7.cpp b/pract_SI/Pract. 03/Solutions/task7.cpp
new file mode 100644
index 0000000..aa9194b
--- /dev/null
+++ b/pract_SI/Pract. 03/Solutions/task7.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#define LIMIT 5
+#define SEPARATOR " "
+
+using namespace std;
+
+//const short LIMIT = 5;
+//const char SEPARATOR = ' ';
+
+
+int main()
+{
+	unsigned long long N;
+	cin >> N;
+
+	if (N < LIMIT)
+		return -1;
+
+	for (int c = 1; c <= N; c++) {
+		for (int b = 1; b < c; b++) {
+			for (int a = 1; a < b; a++) {
+				if ((a * a) + (b * b) == (c * c)) {
+					cout << a << SEPARATOR << b << SEPARATOR << c << endl;
+				}
+			}
+		}
+	}
+
+	return 0;
+}
diff --git a/pract_SI/Pract. 03/Solutions/task8.cpp b/pract_SI/Pract. 03/Solutions/task8.cpp
new file mode 100644
index 0000000..3f32ebf
--- /dev/null
+++ b/pract_SI/Pract. 03/Solutions/task8.cpp
@@ -0,0 +1,41 @@
+#include <iostream>
+
+using namespace std;
+
+const short LOWERLIMIT = 2;
+const short UPPERLIMIT = 9;
+const char SEPARATOR = ' ';
+
+int main()
+{
+	short N;
+	char S;
+	cin >> N >> S;
+
+	if (N < LOWERLIMIT || N > UPPERLIMIT)
+		return -1; //end program
+
+	for (int i = 1; i <= N; i++)
+	{
+		for (int j = N - i; j > 0; j--)
+			cout << SEPARATOR;
+
+		for (int k = 1; k < 2 * i; k++)
+			cout << S;
+
+		cout << endl;
+	}
+
+	for (int i = 1; i < N; i++)
+	{
+		for (int j = 1; j <= i; j++)
+			cout << SEPARATOR;
+
+		for (int k = 1; k < 2 * (N - i); k++)
+			cout << S;
+
+		cout << endl;
+	}
+
+	return 0;
+}
\ No newline at end of file
diff --git a/pract_SI/Pract. 03/Solutions/task9.cpp b/pract_SI/Pract. 03/Solutions/task9.cpp
new file mode 100644
index 0000000..9f1f054
--- /dev/null
+++ b/pract_SI/Pract. 03/Solutions/task9.cpp
@@ -0,0 +1,59 @@
+#include <iostream>
+
+int main() {
+
+	// по-нататък ще учим как се вкарват сложни данни, затова сега ще ги hardcode-нем в main-а
+
+	int hoursOnesStart = 2, minutesTensStart = 5, secondsOnesStart = 6;
+	int hoursOnesFinal = 1, minutesTensFinal = 0, secondsOnesFinal = 2;
+	int hoursDelta = 10, minutesDelta = 19, secondsDelta = 26;
+
+	for (size_t hoursTensStart = 0; hoursTensStart <= 1; ++hoursTensStart)
+	{
+		for (size_t minutesOnesStart = 0; minutesOnesStart <= 9; ++minutesOnesStart)
+		{
+			for (size_t secondsTensStart = 0; secondsTensStart <= 5; secondsTensStart++)
+			{
+				int hoursTemp = hoursTensStart * 10 + hoursOnesStart;
+				int minutesTemp = minutesTensStart * 10 + minutesOnesStart;
+				int secondsTemp = secondsTensStart * 10 + secondsOnesStart;
+
+				secondsTemp += secondsDelta;
+				if (secondsTemp >= 60) {
+					minutesTemp += secondsTemp / 60;
+					secondsTemp %= 60;
+				}
+
+				minutesTemp += minutesDelta;
+				if (minutesTemp >= 60) {
+					hoursTemp += minutesTemp / 60;
+					minutesTemp %= 60;
+				}
+
+				hoursTemp += hoursDelta;
+				if (hoursTemp > 12) {
+					hoursTemp %= 12;
+				}
+
+				bool hoursOnesMatch = hoursTemp % 10 == hoursOnesFinal,
+					minutesTensMatch = minutesTemp / 10 == minutesTensFinal,
+					secondsOnesMatch = secondsTemp % 10 == secondsOnesFinal;
+
+				if (hoursOnesMatch && minutesTensMatch && secondsOnesMatch) {
+					int hoursTensFinal = hoursTemp / 10,
+						minutesOnesFinal = minutesTemp % 10,
+						secondsTensFinal = secondsTemp / 10;
+
+					std::cout << hoursTensStart << hoursOnesStart << ':'
+						<< minutesTensStart << minutesOnesStart << ':'
+						<< secondsTensStart << secondsOnesStart << ' '
+						<< hoursTensFinal << hoursOnesFinal << ':'
+						<< minutesTensFinal << minutesOnesFinal << ':'
+						<< secondsTensFinal << secondsOnesFinal << '\n';
+				}
+			}
+		}
+	}
+
+	return 0;
+}
\ No newline at end of file