Created
April 11, 2017 07:17
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Prints out the bit width of all the fundamental numeric types in C++
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| #include <iostream> | |
| #include <iomanip> | |
| int main() { | |
| std::cout << "Size of (in bits):" << std::endl << | |
| " bool: " << std::setw(2) << sizeof(bool) * 8 << " bits" << std::endl << | |
| " char: " << std::setw(2) << sizeof(char) * 8 << " bits" << std::endl << | |
| " char16_t: " << std::setw(2) << sizeof(char16_t) * 8 << " bits" << std::endl << | |
| " char32_t: " << std::setw(2) << sizeof(char32_t) * 8 << " bits" << std::endl << | |
| " wchar_t: " << std::setw(2) << sizeof(wchar_t) * 8 << " bits" << std::endl << | |
| " signed char: " << std::setw(2) << sizeof(signed char) * 8 << " bits" << std::endl << | |
| " short int: " << std::setw(2) << sizeof(short int) * 8 << " bits" << std::endl << | |
| " int: " << std::setw(2) << sizeof(int) * 8 << " bits" << std::endl << | |
| " long int: " << std::setw(2) << sizeof(long int) * 8 << " bits" << std::endl << | |
| " long long int: " << std::setw(2) << sizeof(long long int) * 8 << " bits" << std::endl << | |
| " unsigned char: " << std::setw(2) << sizeof(unsigned char) * 8 << " bits" << std::endl << | |
| " unsigned short int: " << std::setw(2) << sizeof(unsigned short int) * 8 << " bits" << std::endl << | |
| " unsigned int: " << std::setw(2) << sizeof(unsigned int) * 8 << " bits" << std::endl << | |
| " unsigned long int: " << std::setw(2) << sizeof(unsigned long int) * 8 << " bits" << std::endl << | |
| "unsigned long long int: " << std::setw(2) << sizeof(unsigned long long int) * 8 << " bits" << std::endl << | |
| " float: " << std::setw(2) << sizeof(float) * 8 << " bits" << std::endl << | |
| " double: " << std::setw(2) << sizeof(double) * 8 << " bits" << std::endl << | |
| " long double: " << std::setw(2) << sizeof(long double) * 8 << " bits" << std::endl; | |
| } |
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Obviously this is architecture / cpu / compiler dependent.. different hardware will have different sizes for types.. but this can help you get some kind of idea as to the widths on any given platform. :P