replace.cpp

来自「c++设计思想」· C++ 代码 · 共 31 行

//: C04:Replace.cpp
// From "Thinking in C++, 2nd Edition, Volume 2"
// by Bruce Eckel & Chuck Allison, (c) 2001 MindView, Inc.
// Available at www.BruceEckel.com.
//{L} ../TestSuite/Test
#include <string>
#include <iostream>
using namespace std;

void replaceChars(string& modifyMe, 
  string findMe, string newChars){
  // Look in modifyMe for the "find string"
  // starting at position 0
  int i = modifyMe.find(findMe, 0);
  // Did we find the string to replace?
  if(i != string::npos)
    // Replace the find string with newChars
    modifyMe.replace(i,newChars.size(),newChars);
}

int main() {
  string bigNews = 
   "I thought I saw Elvis in a UFO. "
   "I have been working too hard.";
  string replacement("wig");
  string findMe("UFO");
  // Find "UFO" in bigNews and overwrite it:
  replaceChars(bigNews, findMe,  replacement);
  cout << bigNews << endl;
} ///:~