number of characters in a file

 #include <stdio.h>

int main()

{

    char filename[100];

    char ch;

    int count=0;

    printf("Enter the filename: ");

    scanf("%s", filename);

    FILE *file = fopen(filename, "r");

    if (file == NULL)

    {

        printf("Error: Could not open file.\n");

        return 1;

    }

    while ((ch = fgetc(file)) != EOF) {

        count++;

    }

    printf("Number of characters: %d\n", count);

    fclose(file);

    return 0;

}