WordCount

void main() {

    FILE *fp;
    char filename[100];
    char choice, EndInput;
    int i = 0;

    for(; i<TestNum; i++){
        printf("\nwc.exe -  ");
        scanf("%c", &choice);
        scanf("%c", &EndInput);
        if((choice == ‘c‘) || (choice == ‘w‘) || (choice == ‘l‘) || (choice == ‘a‘)){
            printf("Please input the filename:");
            gets(filename);     //User input the filename
            if ((fp=fopen(filename,"r")) == NULL){        //Judge whether the file exists
                printf("error in opening %s\n",filename);
                exit(1);
            }
            else{
                Func(choice, filename);
            }
        }
        else{
            printf("Please input the correct operation!\n");
        }
    }
}

void Func(char Choice, char *DocPath) {   //Select function

    int i = 0;

    switch (Choice) {
        case ‘c‘:
            printf("Character count: %d\n", GetCharacter(DocPath));
            break;
        case ‘w‘:
            printf("Word count: %d\n", GetWord(DocPath));
            break;
        case ‘l‘:
            printf("Line count: %d\n", GetLine(DocPath));
            break;
        case ‘a‘:
            GetOtherData(DocPath);
            break;
        default:
            printf("Type Input Error!!!");
            break;
    }
}

int GetCharacter(char *DocPath) {    //Count characters

    FILE *file = fopen(DocPath, "r");
    char character;
    int counter = 0;

    while (!(feof(file))){
            character = fgetc(file);
            counter += ((character != ‘\n‘) && (character != ‘ ‘) && (character != ‘\t‘));    //Judge is a character or not
    }
    fclose(file);

    return counter;
}

int GetWord(char *DocPath) {    //Count words

    FILE *file = fopen(DocPath, "r");
    char word;
    int tag = 0;    //The identifier determine whether the character is in the word
    int counter = 0;
    int i;

    while (!(feof(file))) {   //There are characters in the file
        word = fgetc(file);
        if ((word >= ‘a‘ && word <= ‘z‘) || (word >= ‘A‘ && word <= ‘Z‘)) {    //Judge the character is letter or not
            i = ((tag == 0) ? 1 : 0);
            counter += i;
            tag = 1;
        }
        else
            tag = 0;
    }
    fclose(file);

    return counter;
}

int GetLine(char *DocPath) {    //Count lines

    FILE *file = fopen(DocPath, "r");
    char *s = (char*)malloc(1000 * sizeof(char));
    int counter;

    for (counter = 0; fgets(s, 1000, file) != NULL; counter++);
    free(s);
    fclose(file);

    return counter;
}

void GetOtherData(char *DocPath){

    int CodeLine = 0, EmptyLine = 0, NoteLine = 0, Kind = 0, NoteTag = 0;
    //Kind: 0->EmptyLine  1->NoteLine  2->CodeLine
    char Identifiter;
    FILE *file = fopen(DocPath, "r");

    while (!feof(file)){
        Identifiter = fgetc(file);
        if (Kind == 0){         //Judge the EmptyLine
            if (Identifiter == ‘ ‘)
                continue;
            else if (Identifiter == ‘\n‘ || ((Identifiter == ‘{‘ || Identifiter == ‘}‘) && Kind == 0)){
                EmptyLine++;
                Kind = 0;       //Reset Kind
                continue;
            }
            else{
                if (Identifiter == ‘/‘)
                    Kind = 1;
                else
                    Kind = 2;
            }
        }
        if (Kind == 1){         //Judge the NoteLine
            while (!feof(file)){
                Identifiter = fgetc(file);
                //Note by ‘//‘
                if (Identifiter == ‘/‘ && NoteTag == 0){
                    while (!feof(file) && Identifiter != ‘\n‘)
                        Identifiter = fgetc(file);
                    NoteLine++;
                    Kind = 0;
                    NoteTag = 0;   //Reset NoteTag
                    break;
                }
                //Note by ‘/* */‘
                if(Identifiter == ‘*‘ && NoteTag == 0){
                    NoteTag = 1;
                    while(!feof(file) && Identifiter != ‘\n‘)
                        Identifiter = fgetc(file);
                    NoteLine++;
                }
                if(Identifiter == ‘*‘ && NoteTag == 1){ //Judge the ‘*‘ is inside of the note
                    Identifiter = fgetc(file);
                    if(Identifiter == ‘/‘){
                        while (!feof(file) && Identifiter != ‘\n‘)
                            Identifiter = fgetc(file);
                        NoteLine++;
                        Kind = 0;
                        NoteTag = 0;
                        break;
                    }
                    else
                        NoteTag = 1;
                }

            }
        }
        if (Kind == 2){         //Judge the CodeLine
            while (!feof(file) && Identifiter != ‘\n‘)
                Identifiter = fgetc(file);
            Kind = 0;
            CodeLine++;
            continue;
        }
    }
    printf("EmptyLine count: %d  CodeLine count: %d  NoteLine count: %d\n", EmptyLine, CodeLine - 1, NoteLine);　　//CodeLine-1 cuz of feof
}