alfred/LearningCPP
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Test NAN and inf.

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This commit is contained in:
Captain ALM 2022-08-14 22:01:30 +01:00
parent c87d8b9bd1
commit 4eb93057a9
Signed by: alfred
GPG Key ID: 4E4ADD02609997B1
1 changed files with 10 additions and 13 deletions
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main.cpp
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@ -2,18 +2,15 @@
int main() int main()
{ {
std::cout << "bool:\t\t" << sizeof(bool) << " bytes\n"; double zero {0.0};
std::cout << "char:\t\t" << sizeof(char) << " bytes\n"; double posinf { 5.0 / zero }; // positive infinity
std::cout << "wchar_t:\t" << sizeof(wchar_t) << " bytes\n"; std::cout << posinf << '\n';
std::cout << "char16_t:\t" << sizeof(char16_t) << " bytes\n";
std::cout << "char32_t:\t" << sizeof(char32_t) << " bytes\n"; double neginf { -5.0 / zero }; // negative infinity
std::cout << "short:\t\t" << sizeof(short) << " bytes\n"; std::cout << neginf << '\n';
std::cout << "int:\t\t" << sizeof(int) << " bytes\n";
std::cout << "long:\t\t" << sizeof(long) << " bytes\n"; double nan { zero / zero }; // not a number (mathematically invalid)
std::cout << "long long:\t" << sizeof(long long) << " bytes\n"; std::cout << nan << '\n';
std::cout << "float:\t\t" << sizeof(float) << " bytes\n";
std::cout << "double:\t\t" << sizeof(double) << " bytes\n";
std::cout << "long double:\t" << sizeof(long double) << " bytes\n";
std::cout << "std::size_t:\t" << sizeof(std::size_t) << " bytes\n";
return 0; return 0;
} }