diff --git a/函数1-计算ab间整数和.py b/函数1-计算ab间整数和.py
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+++ b/函数1-计算ab间整数和.py
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+# -*- coding: utf-8 -*-
+"""
+Created on Wed May  5 16:11:11 2021
+# a4-1 计算两个正整数间所有整数的和
+@author: Admin
+"""
+#定义函数addab(a,b)
+def addab(a,b):
+    s=0
+    for i in range(a,b+1):
+        s=s+i
+    return s
+     
+x = int(input("请输入第一个数："))
+y = int(input("请输入第二个数："))
+#调用函数
+result = addab(x,y)
+    
+print('{}+...+{}={}'.format(x,y,result))
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