if elis else

CartonPython/lesson5/ch5_1_3.py

@@ -0,0 +1,25 @@
+# coding=utf-8
+# Filename: ch5_1_3.py
+
+score = int(input("请输入一个0~100的整数："))
+grade = "N"
+
+if score > 100:
+    print("输入不正确，哪有这么多分啊！")
+elif score == 100:
+    grade = "A+"
+elif score >= 90:
+    grade = "A"
+elif score >= 80:
+    grade = "B"
+elif score >= 70:
+    grade = "C"
+elif score >= 60:
+    grade = "D"
+elif score >= 0:
+    grade = "F"
+else:
+    print ("输入错误，没有负分！")      
+
+print("Grade = " + grade)
+