C++ Program to Implement LexicoGraphical_Compare in STL

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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. }

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$ 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, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn