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print("=== Operators Demo ===");
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print("");
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print("--- Arithmetic Operators ---");
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a = 20;
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b = 6;
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print("a =", a, ", b =", b);
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print("a + b =", a + b);
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print("a - b =", a - b);
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print("a * b =", a * b);
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print("a / b =", a / b);
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print("a % b =", a % b);
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print("");
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print("--- Comparison Operators ---");
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x = 10;
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y = 20;
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z = 10;
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print("x =", x, ", y =", y, ", z =", z);
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print("x == z:", x == z);
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print("x != y:", x != y);
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print("x < y:", x < y);
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print("y > x:", y > x);
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print("x <= z:", x <= z);
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print("y >= x:", y >= x);
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print("");
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print("--- Logical Operators ---");
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t = 1;
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f = 0;
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print("true (1) && true (1):", t && t);
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print("true (1) && false (0):", t && f);
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print("false (0) || true (1):", f || t);
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print("false (0) || false (0):", f || f);
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print("");
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print("--- || for Default Values ---");
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value = null;
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result = value || "default";
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print("null || \"default\" =", result);
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value = 0;
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result = value || 42;
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print("0 || 42 =", result);
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|
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value = "exists";
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result = value || "default";
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print("\"exists\" || \"default\" =", result);
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|
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value = 100;
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result = value || 0;
|
|
print("100 || 0 =", result);
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|
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print("");
|
|
print("--- String Concatenation ---");
|
|
str1 = "Hello";
|
|
str2 = "World";
|
|
print("str1 + \" \" + str2 =", str1 + " " + str2);
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|
|
|
greeting = "Hi";
|
|
greeting += " there";
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|
print("After += :", greeting);
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|
|
|
print("");
|
|
print("--- Assignment Operators ---");
|
|
n = 10;
|
|
print("n =", n);
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|
|
|
n += 5;
|
|
print("n += 5 ->", n);
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|
|
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n -= 3;
|
|
print("n -= 3 ->", n);
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|
|
|
n *= 2;
|
|
print("n *= 2 ->", n);
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|
|
|
n /= 4;
|
|
print("n /= 4 ->", n);
|
|
|
|
print("");
|
|
print("--- Increment/Decrement ---");
|
|
counter = 0;
|
|
print("counter =", counter);
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|
|
|
counter++;
|
|
print("counter++ ->", counter);
|
|
|
|
counter++;
|
|
print("counter++ ->", counter);
|
|
|
|
counter--;
|
|
print("counter-- ->", counter);
|
|
|
|
++counter;
|
|
print("++counter ->", counter);
|
|
|
|
--counter;
|
|
print("--counter ->", counter);
|
|
|
|
print("");
|
|
print("--- Operator Precedence ---");
|
|
result = 2 + 3 * 4;
|
|
print("2 + 3 * 4 =", result);
|
|
|
|
result = (2 + 3) * 4;
|
|
print("(2 + 3) * 4 =", result);
|
|
|
|
result = 10 - 4 - 2;
|
|
print("10 - 4 - 2 =", result);
|
|
|
|
result = 20 / 4 / 2;
|
|
print("20 / 4 / 2 =", result);
|
|
|
|
print("");
|
|
print("--- Combined Expressions ---");
|
|
a = 5;
|
|
b = 3;
|
|
c = 2;
|
|
result = a * b + c;
|
|
print("5 * 3 + 2 =", result);
|
|
|
|
result = a + b * c;
|
|
print("5 + 3 * 2 =", result);
|
|
|
|
result = (a + b) * c;
|
|
print("(5 + 3) * 2 =", result);
|
|
|
|
print("");
|
|
print("--- Comparison Chains ---");
|
|
val = 15;
|
|
inRange = val > 10 && val < 20;
|
|
print("15 > 10 && 15 < 20:", inRange);
|
|
|
|
outRange = val < 10 || val > 20;
|
|
print("15 < 10 || 15 > 20:", outRange);
|