Parse token

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

char *SkipChars(char *buf, const char charToSkip)
{
    char *p = buf;
    while (p && (*p == charToSkip)) p++;
    return p;
}


char *SkipString(char *buf, const char *str)
{
    char *p;
    p = strstr(buf, str);
    if (p) {
        p += strlen(str);
    }
    return p;
}


char *ParseLine(char *buf, char delim, char *token)
{
    char *start, *end;
    int len;

    if ((!buf) || (!token)) return NULL;
    start = SkipChars(buf, delim);
    if (!*start) return NULL;
    end=NULL;
    if (start) {
         end = start;
         while ((end) && (*end) && (*end != delim)) end++;
         len = end-start;
         strncpy(token, start, len);
         token[len] = 0;
    }
    return end;
}

const char desc[] = "This is just an example for skipstring function";
char res[] = "Mac             Type      Interface\n"
             "1111.2222.3333  S         fe0/0\n"
             "aabc.ddef.8754  S         fe0/0\n"
             "553a.4455.6789  D         fe0/1\n"
             "Total Macs 0\n";


void main( int argc, char **argv )
{
    int i,balance,len;
    char *p, *end;
    char token[100];
    char *saveptr;

    /* Program entry point */
    if (argc) {
        for( i=0; i<argc; i++) {
            printf("argv[%d] = %s\n", i, argv[i]);
            p = SkipChars(argv[i], ' ');
            p = SkipChars(p, '"');
            while (p) {
                if (balance) balance=0;
                 end = SkipChars(p, '"');
                 if (end) {
                    balance = 1;
                    len = end-p;
                    strncpy(token, p, len);
                    token[len] = 0;
                    printf("token=%s\n", token);
                    p = end;
                    //printf("p = %s\n", p);
                }
                if ((!balance) || (!len))
                    break;
            }
        }
    }
    printf("original string: %s\n", desc);
    p = SkipString((char*)&desc[0], "an example for ");
    if (p) {
        printf("After SkipString: %s\n", p);
    }

    p = SkipString((char *)res, "Interface\n");
    if (p) {
        p = strtok(p, "\n");
        //printf("original p=%s\n", p);
        while (p) {
            if (strstr(p, "Total Mac")) break;
            printf("\n\n--------------------------------------\n");
            end = ParseLine(p, ' ', token);
            //printf("end=%s\n", end);
            i = 0;
            while (end){
                p = end;
                //printf("end:**%s\n", p);
                printf("Token%d=%s,\t", i+1, token);
                end = ParseLine(p, ' ', token);
                i++;
            }
            printf("\n");
            printf("%s\n", p);
            printf("--------------------------------------\n");
            p = strtok(NULL, "\n");
        }
    }
}