Lecture Notes: Binary Operators and Assignment Operators

Lecturer: Abdurrahman

Previous Lesson Recap

• Topic: Bitwise Operators
• Operators Covered:
  • Bitwise AND
  • Bitwise OR
  • Exclusive OR
  • Shift Left
  • Shift Right
  • Complement

Current Lesson: Binary Operators

Assignment Operators

• Introduction: Binary operators in the context of assignment operators. There are six assignment operators.

1. Assignment (=)

• Symbol: =
• Function: Assigns a value to a variable

2. Add and Assign (+=)

• Symbol: +=
• Function: Adds value to the variable and then assigns the result to the variable

3. Subtract and Assign (-=)

• Symbol: -=
• Function: Subtracts value from the variable and then assigns the result to the variable

4. Multiply and Assign (*=)

• Symbol: *=
• Function: Multiplies the variable by a value and then assigns the result to the variable

5. Divide and Assign (/=)

• Symbol: /=
• Function: Divides the variable by a value and then assigns the result to the variable

6. Modulus and Assign (%=)

• Symbol: %=
• Function: Takes the modulus of the variable with a value and then assigns the result to the variable

Examples and Implementation in C++

• Initialization:
  • int a = 10;
  • int b = 20;

Examples

• Add and Assign:

  • a += b; is equivalent to a = a + b;
  • Example: If a = 10 and b = 20, then a becomes 30

• Subtract and Assign:

  • a -= b; is equivalent to a = a - b;
  • Example: If a = 40 and b = 20, then a becomes 20

• Multiply and Assign:

  • a *= b; is equivalent to a = a * b;
  • Example: If a = 20 and b = 20, then a becomes 400

• Divide and Assign:

  • a /= b; is equivalent to a = a / b;
  • Example: If a = 400 and b = 20, then a becomes 20

• Modulus and Assign:

  • a %= b; is equivalent to a = a % b;
  • Example: If a = 20 and b = 20, then a becomes 0

Summary of Output from Program

• Assignment Operator (=): Final value of a is 20
• Add and Assign (+=): Final value of a is 40
• Subtract and Assign (-=): Final value of a is 20
• Multiply and Assign (*=): Final value of a is 400
• Divide and Assign (/=): Final value of a is 20
• Modulus and Assign (%=): Final value of a is 0

Next Lesson

• Topic: Ternary Operators

Conclusion

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