Type Casting

Explore how to perform type casting in C++, including implicit and explicit conversions between data types. Understand safe data conversion, manage precision in arithmetic, and use static_cast for controlled casting, especially when handling characters and rounding floats.

We'll cover the following...

Mathematical operations and data types
- Data types
Implicit type casting
Explicit casting
- Rounding off a float number
Treating char as an int
- Casting char to an int
- Casting int to char
Quiz

In C++, type casting refers to converting one data type to another. This can be necessary when performing operations involving different data types or when data needs to fit into a specific type.

Mathematical operations and data types

When performing mathematical operations, the result’s data type is determined by the types of the operands. The rule is simple: the result’s data type is the larger of the two operands’ types. For example:

Adding a float and a double: The result will be a double since double is larger than float.
Adding a float and an int: The result will be a float since a float is larger than an int.
Adding two integers: The result will be an integer.
Multiplying an int and a double: The result will be a double, as it is larger than an int data type.

The compiler automatically handles these conversions, ensuring that the result is stored in the appropriate type.

Data types

Let’s look at the illustration below.

1.Introduction

2.Variables and User Input

3.Simple Math

4.Conditional Statements

5.Loops

6.Functions and Recursion

Assessment

7.Pointers and Arrays

Assessment

8.Classes and Inheritance

9.Templates

Assessment

10.Wrap Up

Type Casting

Mathematical operations and data types

Data types