#include <stdio.h>
#include <ctype.h>
 
int main() {
    FILE *file;
    char filename[100];
    char ch;
    int words = 0, inWord = 0;
 
    // Step 1: Get the file name from the user
    printf("Enter file name: ");
    scanf("%s", filename);
 
    // Step 2: Open the 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 file character by character
    while ((ch = fgetc(file)) != EOF) {
        if (isspace(ch)) {
            // If space or newline, mark end of word
            inWord = 0;
        } else if (inWord == 0) {
            // Start of a new word
            inWord = 1;
            words++;
        }
    }
 
    // Step 5: Print total word count
    printf("Total number of words in the file: %d\n", words);
 
    // Step 6: Close the file
    fclose(file);
 
    return 0;
}