python1+..+100
# -*- coding: cp936 -*- y = "yes" while y == "yes": print "please input num" a = input() print "please input endnum" c = input() b=a+1 while b<=c: a=a+b b=b+1 print '答案爲：' ; print a #y = "no" #取消“#”就是控制循環 print "go on!? (yes or no)：" #y = raw_input() #把輸入結果作爲字符串給予變量y