Create Variables.cpp

1 files changed, 112 insertions, 0 deletions

diff --git a/Sem. 1/Variables.cpp b/Sem. 1/Variables.cpp
new file mode 100644
index 0000000..222b9e2
--- /dev/null
+++ b/Sem. 1/Variables.cpp
@@ -0,0 +1,112 @@
+#include<iostream>
+using namespace std;
+
+
+int main()
+{ 
+	//The reason why operator = returns a value!
+	int a, b, c, d, e, f;
+	a = b = c = d = e = f = 5;
+
+	
+	//Operators
+	
+	
+	//Arithmetic operators
+	int num1 = 5;
+	int num2 = 2;
+
+	int result = a + b; //7
+	result = a - b;     //3
+	result = a*b;       //10
+	result = a / b;     // 2 (not 2.5) (both are ints)
+	result = a%b;       //1  5:2 = 2 (rem :1)
+
+	double num2Copy = 2;
+	double resultCopy = num1 / num2Copy;  //2.5 (one of the variables is a double)
+
+	int A = 5;
+	int B = 2;
+
+	cout << (A++ - B) << endl;// 3 (but A becomes 6)
+	A = 5;//let's make it 5 again
+	cout << (++A - B) << endl;//4 (A becomes 6)
+	
+	// Comparison operators
+
+	int N1 = 5;
+	int N2 = 6;
+
+	cout << (N1 > N2)<<endl;   // 0(false);
+	//or we can do this:
+	bool cond = N1 > N2;
+	cout << cond;
+
+
+	//Other comparison operators : ==, !=, >, <, >=,<= 
+
+	
+	
+	//Logical operators
+
+	bool var1 = false;
+	bool var2 = true;
+
+	bool t1 = var1 && var2; //false;
+	bool t2 = var1 || var2; //true
+	bool t3 = var1 ^ var2;  //true
+
+
+	//Type casting
+	
+	int a1 = 97;
+	double b1 = a1;
+	char c1 = a1;
+	bool d1 = a1;
+
+	cout << a1 << endl;  //97
+	cout << b1 << endl;  //97.0
+	cout << c1 << endl;  //a
+	cout << d1 << endl;  //1
+
+
+	double b2 = 65.5;
+	int a2 = b2;
+	char c2 = b2;
+	bool d2 = b2;
+
+	cout << b2 << endl;  //65.5
+	cout << a2 << endl;  //65
+	cout << c2 << endl;  //A
+	cout << d2 << endl;  //1
+
+
+	char c3 = 'a';
+	double b3 = c3;
+	int a3 = c3;
+	bool d3 = c3;
+
+	cout << c3 << endl;  //a
+	cout << b3 << endl;  //97
+	cout << a3 << endl;  //97
+	cout << d3 << endl;  //1
+
+	bool d4 = true;
+	int a4 = d4;
+	double b4 = d4;
+	char c4 = d4;
+
+	cout << c4 << endl;  // ??
+	cout << b4 << endl;  // 1
+	cout << a4 << endl;  // 1
+	cout << d4 << endl;  // 1
+
+	int grade = 5;
+	
+	bool isValid = grade >= 2 && grade <= 6;
+	bool isValid2 = grade == 2 || grade == 3 || grade == 4 || grade == 5||grade == 6;
+
+	bool isNotValid = !isValid;
+	bool isNotValid2 = grade < 2 || grade>6;
+
+}