int main() { std::string const hello = "Hello"; std::wstring const world = L"World"; Print("%d %s %ls\n", 123, hello, world); } 编译器将有效地扩大内部 printf 函数,如下所示: XML printf("%d %s %ls\n", Argument(123), Argument(hello), Argument(world)); ...
#include <cstdio> #include <cwchar> #include <string> int main() { std::string narrowstr = "narrow"; std::wstring widestr = L"wide"; printf("1 %s \n", narrowstr.c_str()); printf("2 %ls \n", widestr.c_str()); wprintf(L"3 %s \n", narrowstr.c_str()); wprintf(L"4...
编码问题:在处理字符串和字符时,可能会遇到编码问题,例如 Unicode 和 UTF-8 编码。为了解决这些问题,你可以使用 C++ 的宽字符版本的 printf 函数,如 wprintf,或者使用 C++ 的 std::wstring 和std::wcout。 总之,虽然 printf 函数在 C++ 中仍然具有跨平台兼容性,但为了获得更好的类型安全和跨平台支持,建议使用 ...
int main() { std::string const hello = "Hello"; std::wstring const world = L"World"; Print("%d %s %ls\n", 123, hello, world); } 并有效地扩展内部 printf 函数,如下所示: XML 复制 printf("%d %s %ls\n", Argument(123), Argument(hello), Argument(world)); ...
// crt_printf.c// This program uses the printf and wprintf functions// to produce formatted output.#include<stdio.h>intmain(void){charch ='h', *string="computer";wchar_twch = L'w', *wstring =L"Unicode";intcount =-9234;doublefp =251.7366;// Display integersprintf("Integer formats:...
string, string, wstring, wstring); wprintf_s(L"Strings in field (2):\n%25S\n%25.4hs\n %s%25.3ls\n", string, string, wstring, wstring); /* Display real numbers. */ printf_s( "Real numbers:\n %f %.2f %e %E\n", fp, fp, fp, fp ); ...
template <typename T> T const * Argument(std::basic_string<T> const & value) noexcept { return value.c_str(); } Then I can simply call the Print function with some strings:XML Copy int main() { std::string const hello = "Hello"; std::wstring const world = L"World"; Print("...
// crt_printf.c// This program uses the printf and wprintf functions// to produce formatted output.#include<stdio.h>intmain(void){charch ='h', *string="computer";wchar_twch = L'w', *wstring =L"Unicode";intcount =-9234;doublefp =251.7366;// Display integersprintf("Integer formats:...
// crt_printf.c// This program uses the printf and wprintf functions// to produce formatted output.#include<stdio.h>intmain(void){charch ='h', *string="computer";wchar_twch = L'w', *wstring =L"Unicode";intcount =-9234;doublefp =251.7366;// Display integersprintf("Integer formats:...
Temporary std::basic_string C++ std::wstringget_fmt() {returnL"File size: {0}"; } format(get_fmt()); The library will “move” or “take ownership” of the passed object and internally store it in the format object. In short, it is safe to create a format object from a temporary...