Mine

#include <stdio.h>#include <ctype.h>#include <string.h>#include "wordTable.h"#define TRUE 1#define FALSE 0#define MAX_WORD_LENGTH 100char wordBuffer[MAX_WORD_LENGTH];char* readWord(FILE* fp, int retainCase){        char c = 0;        char *ptr = wordBuffer;        while ((c = fgetc(fp))!= EOF){                if( isalpha(c) || c == '_' ){                        if (!retainCase){                                c = tolower(c);                        }                                *ptr++ = c;                }                else {                        if (ptr > wordBuffer){                                break;                        }                }        }        if (ptr == wordBuffer){                return NULL;        }        *ptr = \0;        return wordBuffer;}int main(int argc, char *argv[]){        int retainCase = FALSE;        char *output=NULL;        if (argc > 2){                fprintf(stderr, "Usage: %s [-c]\n", argv[0]);                return EXIT_FAILURE;        }        if (argc == 2){                if ( argv[1] == "-c"){                        retainCase = TRUE;                }                else{                        fprintf(stderr, "Unknown argument '%s'\n", argv[1]);                        return EXIT_FAILURE;                }        }        while ((output=readWord(stdin, retainCase)) != NULL){                addWord(output);        }        printWords();        return EXIT_SUCCESS;}