#include <stdio.h>
 
int main() {
    char str[200];
    int i, digits = 0, spaces = 0, special = 0;
 
    // Input string safely
    printf("Enter a string: ");
    fgets(str, sizeof(str), stdin);  // safer input
 
    // Traverse string
    for (i = 0; str[i] != '\0'; i++) {
        if (str[i] >= '0' && str[i] <= '9')
            digits++;
        else if (str[i] == ' ')
            spaces++;
        else if ((str[i] >= 'a' && str[i] <= 'z') || (str[i] >= 'A' && str[i] <= 'Z'))
            continue; // skip letters
        else if (str[i] != '\n') // exclude newline from special chars
            special++;
    }
 
    // Display results
    printf("Number of digits: %d\n", digits);
    printf("Number of spaces: %d\n", spaces);
    printf("Number of special characters: %d\n", special);
 
    return 0;
}