Questions about types

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However when I want to display the size of a Char, the output gives me something like Ç ⌂ and I don't understand why. Do you have an idea?

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Peter87 (11235)

Geckoo wrote:
All is related at this Microsoft main page (and the next one) : https://docs.microsoft.com/en-us/cpp/cpp/data-type-ranges?view=msvc-170 https://en.cppreference.com/w/cpp/language/types

Note that the Microsoft page contains Microsoft/Windows specific information.

Geckoo wrote:
when I want to display the size of a Char, the output gives me something like Ç ⌂ and I don't understand why. Do you have an idea?

#include <iostream>
#include <climits>

int main()
{
    std::cout << "char is " << (CHAR_BIT * sizeof(char)) << " bits.\n";
}

JLBorges (13770)

> However when I want to display the size of a Char

The types char, unsigned char, and signed char use one byte for both storage and value representation.
The number of bits in a byte is accessible as CHAR_BIT or std::numeric_limits<unsigned char>::digits
https://en.cppreference.com/w/cpp/language/memory_model#Byte

The following sizeof expressions always evaluate to 1:
sizeof(char) sizeof(signed char) sizeof(unsigned char) sizeof(std::byte) (since C++17) sizeof(char8_t) (since C++20)
https://en.cppreference.com/w/cpp/language/sizeof#Notes

Geckoo (362)

Understand. Thanks ++

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