String Character Replacer

This project implements a string manipulation function in C that substitutes specific characters with new ones.

⚙️ Logic

1. Function: void Karakter_Degistir(char str[], char old, char new)
2. Traversal: Loops through the string index by index.
3. Condition: If str[i] == old, assign str[i] = new.
4. Result: The input string is modified in-place.

🚀 Example Output

Based on Question 5: Input String: "MERHABA" Replace: 'A' with 'X'

• Index 1 ('E'): No change
• Index 4 ('A'): Change to 'X'
• Index 6 ('A'): Change to 'X'

--- Karakter Degistirme Programi ---
Orijinal Metin: MERHABA
Degisecek: 'A' -> Yeni: 'X'
Yeni Metin:     MERHXHX