canvas->Update();size_tidx = outputFileName.find_last_of('.');std::stringoutputFileName_plot =std::string(outputFileName,0, idx);if( idx !=std::string::npos ) canvas->Print(std::string(outputFileName_plot).append(std::string(outputFileName, idx)).data()); canvas->Print(std::s...
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...
string s2("ghif"); cout << s1.find_last_of(s2) << endl; cout << s1.find_last_of(s2, 4) << endl;s2中查找s1位置<=4的字符 const char *s3 = "abcdeghi"; cout << s1.find_last_of(s3) << endl; cout << s1.find_last_of(s3,3) << endl;//s3中查找s1的位置3之前包括位置3...
// string::find_last_of #include <iostream> // std::cout #include <string> // std::string #include <cstddef> // std::size_t void SplitFilename (const std::string& str) { std::cout << "Splitting: " << str << '\n'; std::size_t found = str.find_last_of("/\\"); std...
string find_last_of 用法 int find_first_of(char c, int start = 0): 查找字符串中第1个出现的c,由位置start开始。 如果有匹配,则返回匹配位置;否则,返回-1.默认情况下,start为0,函数搜索 整个字符串。 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...
// string::find_last_of#include<iostream> // std::cout#include<string> // std::string#include<cstddef> // std::size_tvoidSplitFilename(conststd::string&str){std::cout<<"Splitting: "<<str<<'\n';std::size_tfound=str.find_last_of("/\\");std::cout<<" path: "<<str.substr(...
size_type find_last_of( value_type _Ch, size_type _Off = npos ) const; size_type find_last_of( const value_type* _Ptr, size_type _Off = npos ) const; size_type find_last_of( const value_type* _Ptr, size_type _Off, size_type _Count ) const; size_type find_last_of( const...
=string::npos){cout<<"字符 "<<c<<" 的最后一个出现位置为 "<<idx<<endl;}else{cout<<"未找到字符 "<<c<<endl;}// 查找字符集中的任意字符stringchars("xyz");idx=str.find_last_of(chars);if(idx!=string::npos){cout<<"字符集中任一字符的最后一个出现位置为 "<<idx<<endl;}else{cout...
size_type find_last_of( value_type _Ch, size_type _Off = npos ) const; size_type find_last_of( const value_type* _Ptr, size_type _Off = npos ) const; size_type find_last_of( const value_type* _Ptr, size_type _Off, size_type _Count ) const; size_type find_last_of( const...
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 > size_type find_last_of(const T& t, size_type...