## Key Concepts

Review core concepts you need to learn to master this subject

### `if` Statement

``````if (a == 10) {
// Code goes here
}``````

An `if` statement is used to test an expression for truth.

• If the condition evaluates to `true`, then the code within the block is executed; otherwise, it will be skipped.
Conditionals & Logic
Lesson 1 of 2
1. 1
Every program we’ve seen so far has only had one possible path of execution — they all execute line by line, from top to bottom. And every time you run one of those programs, it gives you the same …
2. 2
Before we dive deep into the syntax of the if statement, let’s do a demo! Here, we have coinflip.cpp program that simulates a coin toss: - 50% of the time, it’s Heads. - 50% of the time, i…
3. 3
An if statement is used to test an expression for truth and execute some code based on it. Here’s a simple form of the if statement: if (condition) { some code } If the condition is true, …
4. 4
When writing conditional statements, sometimes we need to use different types of operators to compare values. These operators are called relational operators. To have a condition, we need relati…
5. 5
We can also add an else clause to an if statement to provide code that will only be executed if the condition is false. Here’s a form of an if statement that includes an else clause: if (condition…
6. 6
So what happens if you want more than two possible outcomes? This is where else if comes in! if (condition) { some code } else if (condition) { some code } else { some code } The el…
7. 7
Now that we know how if, else if, else work, we can write programs that have multiple outcomes. Programs with multiple outcomes are so common that C++ provides a special statement for it… the swi…
8. 8
Congratulations! 🙌 Here are some of the major concepts: - An if statement checks a condition and will execute a task if that condition evaluates to true. - if / else statements make binary decisi…

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