while True: a =int(input("Please enter number a: ")) b =int(input("please enter number b: ")) print("a+b="+str(a+b)) break
while True:
a =int(input("Please enter number a: "))
b =int(input("please enter number b: "))
print("a+b="+str(a+b))
break
本文标题：9.while
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