cpp / beginner
Snippet
Variables and Fundamental Data Types
C++ has several fundamental data types. int stores whole numbers, double stores decimals, char stores single characters, and bool stores true/false values. Each type has different memory requirements and uses.
snippet.cpp
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#include <iostream>using namespace std;int main() {int wholeNumber = 42;double decimal = 3.14;char grade = 'A';bool isActive = true;cout << "Number: " << wholeNumber << endl;cout << "Pi: " << decimal << endl;cout << "Grade: " << grade << endl;cout << "Active: " << isActive << endl;return 0;}
Breakdown
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int wholeNumber = 42;
Integer for whole numbers, typically 4 bytes
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double decimal = 3.14;
Double precision for decimal numbers
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char grade = 'A';
Character type for single letters or symbols
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bool isActive = true;
Boolean type, can only be true or false