#include 
     
      #include 
      
       intmain( int argc, char** argv ){        int i = 0;        for ( ; i < argc; i++ )        {                printf( "argv[%d] is %s\n", i, argv[i] );        }        int arg_c = argc;        char** arg_v = argv;        arg_c--, arg_v++;        while (arg_c > 0 && *arg_v[0] == '-') {                while (*++arg_v[0])                {                        switch (*arg_v[0])                        {                                       case 'v':                                        printf("v\n");                                        break;                                case 'q':                                        printf("q\n");                                        break;                                case 'f':                                        printf("f\n");                                        break;                                default:                                        break;                        }                //argc--, av++;                }                arg_c--, arg_v++;        }        for ( i = 0 ; i < argc; i++ )        {                printf( "argv[%d] is %s\n", i, argv[i] );        }        printf( "size of 4 is %d and null is %d\n", sizeof(argv[4]), sizeof('\0'));        exit(0);}