Numeric Types

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~6 min lesson11 learning blocks3 code examples1 checks/interactions

Lesson outline

Integer Types

Integer types store whole numbers without decimal points. The most commonly used is int:

For numbers with decimal points, C++ offers float and double. These are used for approximating real numbers:

While float uses less memory, double provides greater precision:

float: about 7 digits of precision (good for simple measurements)
double: about 15 digits of precision (better for scientific calculations)
long double: 19+ digits of precision (for extreme precision needs, platform-dependent)

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DevAcademia lesson/C++ Basics

Topic progressTopic 16 of 109 - 15% complete

~6 min lesson11 learning blocks3 code examples1 checks/interactions

Lesson outline

Integer types store whole numbers without decimal points. The most commonly used is int:

For numbers with decimal points, C++ offers float and double. These are used for approximating real numbers:

While float uses less memory, double provides greater precision:

float: about 7 digits of precision (good for simple measurements)
double: about 15 digits of precision (better for scientific calculations)
long double: 19+ digits of precision (for extreme precision needs, platform-dependent)

Was this topic clear?