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

#define MAX_SIZE 10000

void count_tokens(const char *input) {
    int count = 0;
    const char *ptr = input;

    while (*ptr) {
        if (isspace(*ptr)) {
            ptr++;
            continue;
        }

        if (strchr("()[]{};,+-*/&|!<>=.", *ptr)) {
            count++; 
            ptr++;   
            continue;
        }

        while (*ptr && !isspace(*ptr) && !strchr("()[]{};,+-*/&|!<>=.", *ptr)) {
            ptr++;
        }
        count++;
    }

    printf("Total number of tokens: %d\n", count);
}

int main() {
    FILE *file_ptr;
    char *content;
    char ch;
    size_t index = 0;

    file_ptr = fopen("tokens.c", "r");
    if (file_ptr == NULL) {
        printf("File can't be opened\n");
        return EXIT_FAILURE;
    }

    content = malloc(MAX_SIZE * sizeof(char));
    if (content == NULL) {
        printf("Memory allocation failed\n");
        fclose(file_ptr);
        return EXIT_FAILURE;
    }

    printf("Content of the file is:\n");
    while ((ch = fgetc(file_ptr)) != EOF) {
        printf("%c", ch);
        content[index++] = ch;
    }
    content[index] = '\0'; 

    fclose(file_ptr);

    count_tokens(content);

    free(content);
    return 0;
}