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1 files changed, 117 insertions, 0 deletions
| -rw-r--r-- | Sem. 01/Variables.cpp | 117 |
diff --git a/Sem. 01/Variables.cpp b/Sem. 01/Variables.cpp new file mode 100644 index 0000000..f793a65 --- /dev/null +++ b/Sem. 01/Variables.cpp @@ -0,0 +1,117 @@ +#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; + + //Types + int t1 = 4; + double t2 = 4.5; + char t3 = 'v'; + bool t4 = true; + + + //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; + +} |