下面是说明字符串的程序:: find_last_of(): // C++ program to illustrate string::find_last_of#include<cstddef>#include<iostream>#include<string>usingnamespacestd;// Driver Codeintmain(){// Given Stringstringstr("Welcome to GeeksforGeeks!");// Character to be foundcharch ='e';// To sto...
int find_last_of(char c): 查找字符串中最后一个出现的c。有匹配,则返回匹配位置;否则返回-1.该搜索在字符末尾查找匹配,所以没有提供起始位置。 示例: string str = "Mississippi"; int index; // 's ' 在index 为2、3、5、6处出现 index = str.find_first_of('s',0); // index为2 index = ...
std::string::find_last_of C++98 C++11 string (1) size_t find_last_of (const string& str, size_t pos = npos) const; c-string (2) size_t find_last_of (const char* s, size_t pos = npos) const; buffer (3) size_t find_last_of (const char* s, size_t pos, size_t n)...
查看资料得知,find_last_of只能用来查找单个"字符“,即便是参数为字符串,也只是看作由字符组成数组,从原字符串中查找这些字符。 若要查找子串,正确的用法是使用rfind,修改如下: // judge if it's a names file if(config.classesFile.rfind(".names") != std::string::npos) { // test code... }发布...
size_t find_last_of (const string& str, size_t pos = npos) const noexcept; size_t find_last_of (const char* s, size_t pos = npos) const; size_t find_last_of (const char* s, size_t pos, size_t n) const; size_t find_last_of (char c, size_t pos = npos) const noexce...
size_t find_last_of (const char* s, size_t pos, size_t n) const; size_t find_last_of (char c, size_t pos = npos) const noexcept; http://www.cplusplus.com/reference/string/string/find_last_of/ 版权声明:本文为CSDN博主「NearXDU」的原创文章,遵循 CC 4.0 BY-SA 版权协议,转载请附...
std::string::find_last_of in C++ with Examples std::string::find_last_of 是一个字符串类成员函数,用于查找字符串中任何字符最后一次出现的索引。如果该字符存在于字符串中,则返回该字符在字符串中最后一次出现的索引,否则返回 string::npos。头文件: #include < string > 模板类 template < class T >...
stdintmain(){string str="hello world";string chars="xyz";size_t pos=str.find_last_of(chars);if(pos!=string::npos){cout<<"Last occurrence '"<<chars<<"' is at index "<<pos<<endl;}else{cout<<"Character not found in string (unmatched character)"<<endl;}return0;} ...
2%29相当于find_last_of(basic_string_view(&c, 1), pos)... 3%29相当于find_last_of(basic_string_view(s, count), pos)... 4%29相当于find_last_of(basic_string_view(s), pos)... 参数 v - view to search for pos - position at which to start the search ...
_Count 字元數目,以第一個字元開始往前計算,用於搜尋成員函式的 C 字串。 _Str 用於搜尋成員函式的字串。傳回值子字串的最後一個字元的索引搜尋指定的,在成功;否則為 npos。範例複製 // basic_string_find_last_of.cpp // compile with: /EHsc #include <string> #include <iostream> int main( )...