Classic pointer Expression program--a simple version of the Find command implementation

#include <stdio.h>
#include <string.h>
#define MAXLINE 1000
int Getline (char *line, int max);
/* Find:print lines that match pattern from 1st ARG */
Main (int argc, char *argv[])
{
Char Line[maxline];
Long Lineno = 0;
int C, except = 0, Number = 0, found = 0;
while (--ARGC > 0 && (*++ARGV) [0] = = '-')
while (c = *++argv[0])
Switch (c) {
Case ' x ':
except = 1;
Break
Case ' n ':
Number = 1;
Break
Default
printf ("Find:illegal option%c\n", c);
ARGC = 0;
Found =-1;
Break
}
if (argc! = 1)
printf ("Usage:find-x-n pattern\n");
Else
while (Getline (line, MAXLINE) > 0) {
lineno++;
if (Strstr (line, *argv)! = NULL)! = except) {
if (number)
printf ("%ld:", Lineno);
printf ("%s", line);
found++;
}
}
return found;
}

Classic pointer Expression program--a simple version of the Find command implementation