一次偶然,发现完全同一份代码,在不同机器上find出现两个不同执行结果,本文旨在研究find的“诡异”行为,找出背后的原因。 2. find字符串 测试代码: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 // g++ -g -o x x.cpp #include #include extern "C" int main() { std::string
find the last occurrence of a substring (public member function) find_first_of find first occurrence of characters (public member function) find_first_not_of find first absence of characters (public member function) find_last_of find last occurrence of characters ...
#include <string> #include <iostream> using namespace std; int main() { string s = "helloworld"s; cout << "寻找h的结果:" << s.find('h') << endl; cout << "寻找e的结果:" << s.find('e') << endl; cout << "寻找l的结果:" << s.find('l') << endl; cout << "寻找o...
find finds the first occurrence of the given substring (public member function) rfind find the last occurrence of a substring (public member function) find_first_of find first occurrence of characters (public member function) find_first_not_of ...
__cpp_lib_to_string202306L(C++26)Redefiningstd::to_stringin terms ofstd::format Example Run this code #include <cstdio>#include <format>#include <initializer_list>#include <iostream>#include <string>#if __cpp_lib_to_string >= 202306Lconstexprautorevision(){return" (post C++26)";}#...
std::string.find_first_not_of是C++标准库中的一个字符串查找函数,用于在给定字符串中查找第一个不在指定字符集合中的字符,并返回其位置。 该函数的原型如下: 代码语言:cpp 复制 size_tfind_first_not_of(conststring&str,size_t pos=0)constnoexcept; ...
std::basic_string<CharT,Traits,Allocator>::resize_and_overwrite - cppreference.comen.cpp...
(s.find(' '));// trims from ' ' to the end of the string; overload (1)std::cout<<"4) "<<s<<'\n';autoit=std::next(s.begin(), s.find('s'));// obtains iterator to the first 's's.erase(it,std::next(it,2));// erases "sI"; overload (3)std::cout<<"5) "<<...
{ size_type _M_length; size_type _M_capacity; _Atomic_word _M_refcount; }; // _Rep是模板类basic_string内嵌struct struct _Rep : _Rep_base { // The following storage is init'd to 0 by the linker, // resulting (carefully) in an empty string with one reference. // 空的std::...
// 获取file的后缀voidTeststring1(){stringfile("string.cpp");size_tpos = file.rfind('.'); string suffix = file.substr(pos); cout << suffix << endl; }// 取出url中的域名voidTeststring2(){stringurl("http://www.cplusplus.com/reference/string/string/find/"); ...