11-02-02.cpp

more efftive 代码

#include <iostream>
#include <cstring>
#include <algorithm>
using namespace std;

int main()
{
  char* s = "executable.exe";
  char* suffix = "exe";
  
  const int N = strlen(s);
  const int N_suf = strlen(suffix);
  
  char* location = find_end(s, s + N, suffix,
                            suffix + N_suf);
  
  if (location != s + N) {
    cout << "Found a match for " << suffix << " within " << s
         << endl;
    cout << s << endl;
    
    int i;
    for (i = 0; i < (location - s); ++i)
      cout << ' ';
    for (i = 0; i < N_suf; ++i)
      cout << '^';
    cout << endl;
  }
  else
    cout << "No match for " << suffix << " within " << s << endl;
}