Added task 3

basic programming/3rd task/1.py

@@ -0,0 +1,15 @@
+def countAlphaBet(txt: str) -> int:
+    count = 0
+    for char in txt:
+        if char.isalpha():  # בודק אם התו הוא אות
+            count += 1
+    return count
+
+def main_1ex():
+    txt1 = "Hello World!"
+    print(f'in {txt1} there are {countAlphaBet(txt1)} alphabetic characters')
+    
+    txt2 = "123 test 123 test"
+    print(f'in {txt2} there are {countAlphaBet(txt2)} alphabetic characters')
+
+main_1ex()