save project

diy1.py

-#定义一个函数sum_numbers()
-#要求这个函数能接收一个名为num的整型参数
-#要求这个函数能计算1+2+3+……+num的结果
-def sum_numbers(num):
-    if num == 1:
+print(606)
+###
+def func(n):
+    if n>2:
         return 1
         return 1
-    temp = sum_numbers(num-1)
-    return num+temp
+        elif n>2:
+            value = func(n-1)+func(n-2)
+            return value
 
 
-result =sum_numbers(100)
-print(result)
+result = func(15)
+print(result)
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+            
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