Programming Operators and Expressions Quiz

C++ Program Output

• A program is presented that uses the cout function to display various calculations.
• The output includes expressions like 45 + 90, 4 + 5 * 2, 4 * 5 + 9 * 10, 15 % 4, (4 + 5) * 9 - 10, and 4 / 2 * 3.
• The output of each calculation is shown on a new line, separated by endl.

Simple Interest Calculation

• The program prompts the user for the principle, rate, and time.
• These values are used in the formula SimpleInterest = Principle * Rate * Time / 100.
• The calculated simple interest is displayed.

Constant Value Output

• A constant integer Age is assigned the value 60.
• Another integer variable MyAge is set to 5.
• The expression MyAge + Age is calculated and displayed.

Area Calculation

• A constant float PIE is declared with the value 3.1416.
• Radius is set to 5.
• Area is calculated: Area = PIE * Radius * Radius.
• The calculated area is displayed.

Unary Operators

• Unary operators operate on a single operand.
• Three unary operators are: ++ (Increment), -- (Decrement), and ! (Logical NOT).
• Example usage and output for each operator is presented.

Binary Operators

• Binary operators operate on two operands.
• Arithmetic operators perform calculations (e.g., +, -, *, /, %).
• Relational operators compare values (e.g., ==, >, <, >=, <=, !=).
• Logical operators combine conditions (e.g., &&, ||, !).

Arithmetic Assignment Operators

• Arithmetic assignment operators combine arithmetic operations with assignment (e.g., +=, -=, *=, /=, %=).
• Examples show equivalent calculations.

Operator Precedence

• The order of operations in an expression is determined by operator precedence.
• A table shows the precedence levels of various operators.
• Operators with higher precedence are evaluated first.

Conditional Constructs: if

• The if statement executes a block of code if a condition is true.
• The syntax is if (condition) {statements}.
• Example demonstrates using if to check if a number is positive.

Conditional Constructs: if...else

• The if...else statement executes one block if a condition is true, and another block if it's false.
• The syntax is if (condition) {statement1;} else {statement2};
• The example demonstrates checking if a number is even or odd.

Conditional Constructs: if...else if

• The if...else if statement checks multiple conditions sequentially.
• It allows a program to execute different actions depending on different conditions.
• The example shows assigning grades based on marks.

Conditional Constructs: switch

• The switch statement executes a block of code based on the value of an expression.
• The syntax is switch(variable) {case value1: statements; break; case value2: statements; break; default: statements;}
• The example shows assigning designations to employee benefits.

Loops: for Loop

• The for loop iterates over a block of code a specific number of times.
• The syntax for(init; condition; inc/dec) {statements}
• Examples display even numbers, sum of series.

Loops: while Loop

• The while loop iterates over a block of code while a condition is true.
• The syntax while (condition) {statements}
• Example is given to display the sum of numbers.

Loops: do...while Loop

• The do...while loop iterates at least once, then continues to execute as long as a condition is true.
• The syntax do {statements} while (condition);
• The example displays numbers to 5.

Prime Number Check

• A program checks if a given number is prime or not (divisible only by 1 and itself).

LCM Calculation

• A program calculates the least common multiple (LCM) of two given numbers.

Number Reversal

• A program reverses a four-digit integer.

C++ Recap

• A summary of different operators and conditional statements.
• Three types of loops are highlighted.
• A checklist allows users to mark understanding of each concept.

Evaluation Questions

• A set of evaluation questions are provided to test the student's understanding.
• The answer options are given to answer the evaluation questions.