Lecture 2.7 Type Conversion in C++.pdf
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This document discusses type conversion in C++. It explains that argument coercion forces arguments to be of the proper type, such as converting an integer into a double. It notes that conversion rules usually convert arguments automatically but changing from double to integer can truncate data. It also discusses that mixed type arguments go to the highest type through promotion. Finally, it outlines the two main types of conversion: coercion/implicit conversion and truncation/explicit type conversion using casting operators like (int).
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Lecture 2.7 Type Conversion in C++.pdf
- 1. TYPE CONVERSION IN C++ Lecture 2.7 Prepared by: Mian Saeed Akbar
- 2. TYPE CONVERSION IN C++ Argument Coercion o Force arguments to be of proper type • Converting int (4) to double (4.0) o Conversion rules Arguments usually converted automatically Changing from double to int can truncate data 3.4 to 3 Mixed type goes to highest type (promotion) int * double cout << sqrt(4) Type Conversion / Casting 1. Coercion / Implicit type Conversion / promotion 2. Truncation / Explicit type Conversion int x = int(45.0); int x = (int)45.0;
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