#include <iostream> #include <iomanip> #include <string> void help(void); main(int argc, char *argv[]) { int i, sw; string *cmdline; cmdline = new string[argc]; if (cmdline != NULL) { for (i = 0; i < argc; i++) cmdline[i] = argv[i]; for (i = 0; i < argc; i++) { sw = cmdline[i].find("--",0); if (sw != string::npos) { sw = cmdline[i].find("help", sw + 1); if (sw != string::npos) { help(); break; } } } delete[] cmdline; return 0; } else { cerr << "ERROR: no space." << endl; return -1; } } void help(void) { cout << "This is the help." << endl; }
There is really nothing new here. It is the previous example and uses the string class find method to first locate '--' and if found then locate 'help'.
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David Beech