C++ Program to Implement LexicoGraphical_Compare in STL

This C++ Program demonstrates implementation of LexicoGraphical_Compare in STL.

Here is source code of the C++ Program to demonstrate LexicoGraphical_Compare in STL. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

  1. /*
  2.  * C++ Program to Implement LexicoGraphical_Compare in Stl
  3.  */
  4. #include <iostream>
  5. #include <algorithm>
  6. #include <cctype>
  7. #include <cstring>
  8. using namespace std;
  9.  
  10. bool mycomp (char c1, char c2)
  11. {
  12.     return tolower(c1) < tolower(c2);
  13. }
  14.  
  15. int main ()
  16. {
  17.     int flen, blen;
  18.     char foo[] = "Apple";
  19.     char bar[] = "apartment";
  20.     flen = strlen(foo);
  21.     blen = strlen(bar);
  22.     cout << boolalpha;
  23.     cout << "Comparing foo and bar lexicographically (foo < bar): "<<endl;
  24.     cout << "Using default comparison (operator <): ";
  25.     cout << lexicographical_compare(foo, foo + flen, bar, bar + blen);
  26.     cout <<endl;
  27.     cout << "Using mycomp as comparison object: ";
  28.     cout << lexicographical_compare(foo, foo + flen, bar, bar + blen, mycomp);
  29.     cout <<endl;
  30.     return 0;
  31. }

$ g++ LexicoGraphical_Compare.cpp
$ a.out
Comparing foo and bar lexicographically (foo < bar): 
Using default comparison (operator <): true
Using mycomp as comparison object: false
 
 
------------------
(program exited with code: 0)
Press return to continue

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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