This article offers a sample of basic Markdown syntax that can be used in Hugo content files, also it shows whether basic HTML elements are decorated with CSS in a Hugo theme.

02 User defined literals _f

Requirements：

  1. Please don’t change main function.
  2. Please implement your function/code to get Expected results.
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int main(){
    std::cout << "乐 :{} *\n"_f(5);
    std::cout << "乐 :{0} {0} *\n"_f(5);
    std::cout << "乐 :{:b} *\n"_f(0b01010101);
    std::cout << "{:*<10}"_f("卢瑟");
    std::cout << '\n';
    int n{};
    std::cin >> n;
    std::cout << "π：{:.{}f}\n"_f(std::numbers::pi_v<double>, n);
}

Expected results

乐 :5 *
乐 :5 5 *
乐 :1010101 *
卢瑟******
6
π：3.141593

Suggested environments

Compiler explorer, please add –std=c++20 to the compilation options.

My implementation

Reference code, please use browser to translate page from Chinese to English if necessary.