6 files changed, 40 insertions, 0 deletions
diff --git a/pract_SI/Pract. 04/Solutions/task4 - abs.cpp b/pract_SI/Pract. 04/Solutions/task4 - abs.cpp
new file mode 100644
index 0000000..771550b
--- /dev/null
+++ b/pract_SI/Pract. 04/Solutions/task4 - abs.cpp
@@ -0,0 +1,4 @@
+int abs(int num1, int num2)
+{
+    return ((num1 - num2) >= 0 ? (num1 - num2) : (num2 - num1));
+}
+\ No newline at end of file
diff --git a/pract_SI/Pract. 04/Solutions/task4 - fabs.cpp b/pract_SI/Pract. 04/Solutions/task4 - fabs.cpp
new file mode 100644
index 0000000..bb2f15b
--- /dev/null
+++ b/pract_SI/Pract. 04/Solutions/task4 - fabs.cpp
@@ -0,0 +1,4 @@
+double fabs(double &num)
+{
+	return num > 0.0 ? num : -num;	
+}
+\ No newline at end of file
diff --git a/pract_SI/Pract. 04/Solutions/task7 - a).cpp b/pract_SI/Pract. 04/Solutions/task7 - a).cpp
new file mode 100644
index 0000000..8a590b4
--- /dev/null
+++ b/pract_SI/Pract. 04/Solutions/task7 - a).cpp
@@ -0,0 +1,3 @@
+bool isInInterval(int num) {
+	return num >= 100 && num <= 10000;
+}
diff --git a/pract_SI/Pract. 04/Solutions/task7 - b).cpp b/pract_SI/Pract. 04/Solutions/task7 - b).cpp
new file mode 100644
index 0000000..4dde747
--- /dev/null
+++ b/pract_SI/Pract. 04/Solutions/task7 - b).cpp
@@ -0,0 +1,3 @@
+bool isNumberInInterval(long longnum, long long interval_lower_bound, long long interval_upper_bound,) {
+	return num >= interval_lower_bound && num <= interval_upper_bound;
+}
+\ No newline at end of file
diff --git a/pract_SI/Pract. 04/Solutions/task8.cpp b/pract_SI/Pract. 04/Solutions/task8.cpp
new file mode 100644
index 0000000..9d91c6a
--- /dev/null
+++ b/pract_SI/Pract. 04/Solutions/task8.cpp
@@ -0,0 +1,9 @@
+long long pow(int num, unsigned N)
+{
+	long long result = 1;
+
+	for (size_t i = 0; i < N; i++)
+		result *= num;
+
+	return result;
+}
+\ No newline at end of file
diff --git a/pract_SI/Pract. 04/Solutions/task9.cpp b/pract_SI/Pract. 04/Solutions/task9.cpp
new file mode 100644
index 0000000..0356de8
--- /dev/null
+++ b/pract_SI/Pract. 04/Solutions/task9.cpp
@@ -0,0 +1,17 @@
+int calculate(int a, int b, char action = '+')
+{
+	switch (action)
+	{
+	case '+': return a + b;
+	
+	case '-': return a - b;
+	
+	case '*': return a * b;
+	
+	case '/': return a / b;
+	
+	case '%': return a % b;
+	
+	default: return -1;
+	}
+}
+\ No newline at end of file