Count Alphabets Digits and Symbols in a String

Code

#include <stdio.h>
#include <stdint.h>

void classify_chars(const char *str, uint8_t *alpha, uint8_t *digit, uint8_t *symbol)
{
    // Your logic here
    while (*str != '\0')
    {
        if (*str >= 65 && *str <= 90)
        {
            ++(*alpha);
        }else if (*str >= 97 && *str <= 122){
            ++(*alpha); 
        }else if (*str >= 48 && *str <= 57){
            ++(*digit); 
        }else {
            if (*str != 32){
                ++(*symbol); 
            }
            
        }
        ++str; 
    }

}

int main() {
    char str[101];
    fgets(str, sizeof(str), stdin);

    // Remove newline
    uint8_t i = 0;
    while (str[i]) {
        if (str[i] == '\n') {
            str[i] = '\0';
            break;
        }
        i++;
    }

    uint8_t alpha = 0, digit = 0, symbol = 0;
    classify_chars(str, &alpha, &digit, &symbol);
    printf("Alphabets = %u\nDigits = %u\nSymbols = %u", alpha, digit, symbol);
    return 0;
}

Solving Approach