75. Count Alphabets Digits and Symbols in a String

You are given a null-terminated string containing alphabets, digits, symbols, and spaces. Your task is to:

• Count the number of:
  • Alphabets (A–Z, a–z)
  • Digits (0–9)
  • Other symbols (anything that is not alphabet, digit, or space)

Avoid using standard library functions like isalpha(), isdigit().

Example-1

Input: "C99_Firmware!"
Output:
Alphabets = 9  
Digits = 2  
Symbols = 2

Example-2

Input: "123@hello#"
Output:
Alphabets = 5  
Digits = 3  
Symbols = 2