#include <stdio.h>
#include <ctype.h>
 
int main() {
    FILE *file;
    char filename[100];
    char ch;
    int vowels = 0, consonants = 0, digits = 0, spaces = 0;
 
    // Step 1: Ask for file name
    printf("Enter file name: ");
    scanf("%s", filename);
 
    // Step 2: Open file in read mode
    file = fopen(filename, "r");
 
    // Step 3: Check if file exists
    if (file == NULL) {
        printf("Error! Cannot open file.\n");
        return 1;
    }
 
    // Step 4: Read each character until EOF
    while ((ch = fgetc(file)) != EOF) {
        ch = tolower(ch); // Convert to lowercase for simplicity
 
        if (ch >= 'a' && ch <= 'z') {
            // Check vowels
            if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u')
                vowels++;
            else
                consonants++;
        }
        else if (ch >= '0' && ch <= '9')
            digits++;
        else if (ch == ' ')
            spaces++;
    }
 
    // Step 5: Display results
    printf("\nVowels: %d", vowels);
    printf("\nConsonants: %d", consonants);
    printf("\nDigits: %d", digits);
    printf("\nSpaces: %d\n", spaces);
 
    // Step 6: Close the file
    fclose(file);
 
    return 0;
}