Replace function

[mop65715]

The goal is to replace Invalid_Enum with int. The approach.

# include <string>
# include <iostream>

void 
Replace( std::string& Source, const std::string& Replacement) 
{   
  std::string::size_type Pos = 0;
  Pos = Source.find( '(' ); Pos++;
  std::string::size_type Pos2 = 0;
  Pos2 = Source.find ( "Enum" , Pos ) ;  Pos2 += 3;
  Source.replace ( Pos, Pos2, Replacement );
 
} 


int main() {

  std::string test ( "(Invalid_Enum e )" ) 
  Replace ( test, " int" ) ;
  std::cout << test << std::endl;
  std::cin.get();
}

I'm not sure there's a more efficient way to do this? I suspect one way to do this is to write the replace function to take as arguments the Source string, the Replacement strings, the start and end character (or start and end string) .

[laserlight]

The goal is to replace Invalid_Enum with int.

Taking what you say literally, it sounds like you want to write:

#include <string>
#include <iostream>

void Replace(std::string& subject, const std::string& search, const std::string& replacement)
{
    std::string::size_type pos = subject.find(search);
    if (pos != std::string::npos)
    {
        std::string::iterator begin = subject.begin() + pos;
        subject.replace(begin, begin + search.size(), replacement);
    }
}

int main()
{
    std::string test("(Invalid_Enum e )");
    Replace(test, "Invalid_Enum", " int");
    std::cout << test << std::endl;
    std::cin.get();
}