Types in Depth

Types in Depth

In this lesson — part of Data Deep Dive — you'll learn types in depth in C# and why it matters in real work.

Why it matters

Types tell you what operations make sense and catch whole classes of bugs early.

Key ideas

• Common types: text, numbers, booleans
• Type conversion and coercion
• When to be explicit about types
• Type errors and how to read them

In practice

Here's how it looks in idiomatic C#:

int count = 42;
double price = 9.99;
bool isReady = true;
char grade = 'A';
string text = count.ToString();   // int -> string
int parsed = int.Parse("100");    // string -> int
double widened = count;           // implicit int -> double

C# note: C# is statically typed with implicit widening conversions (int to double) but requires explicit casts or Parse/Convert for narrowing or string conversions.

Try it yourself

Exercise: In C#, convert a number to text and back, and print both.

Recap

You now understand types in depth and can apply it in C#. Mark this lesson complete and continue to the next one.