//
// Programmer:    Craig Stuart Sapp <craig@ccrma.stanford.edu>
// Creation Date: Tue Dec  9 20:36:13 PST 1997
// Last Modified: Tue Jan 27 21:23:56 GMT-0800 1998
// Filename:      ...sig/doc/examples/improv/improv/tohex/tohex.cpp
// Syntax:        C++; improv
// $Smake:        cc -o %b %f -lg++ && strip %b
// $Smake-linux:  g++ -o %b %f && strip %b
//

#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <iostream>
#include <iomanip>

using namespace std;

int   atohd       (const char* aNumber);
void  exitUsage   (const char* command);


int main(int argc, char* argv[]) {
   if (argc != 2) exitUsage(argv[0]);

   int aValue;
   aValue = atohd(argv[1]);
   cout << "0x" << hex << aValue << endl;

   return 0;
}



int atohd(const char* aNumber) {
   if (strchr(aNumber, 'x') != NULL) {
      return (int)strtol(aNumber, (char**)NULL, 16);
   } else {
      return atoi(aNumber);
   }
}



void exitUsage(const char* command) {
      cout << endl;
      cout << "Converts an integer into hexadecimal form.\n";
      cout << endl;
      cout << "Usage: " << command << " integer" << endl;
      cout << endl;
      cout << "   integer = [-2147483648..2147483647] \n";
      cout << "             [-0x80000000..0x7fffffff] \n";
      cout << endl;
      exit(1);
}



// md5sum: 71d86d3d38fe425c031d15d53b37a578 tohex.cpp [20160320]