结果不一样
sum = 0 x = 1 n = 1 while True: if n > 20: break sum = sum + x x = x * 2 n = n + 1 print sum 1048575 然而 sum = 0 x = 1 n = 1 while True: if n > 20: break n = n + 1 x = x * 2 sum = sum + x print (sum) 2097150 为什么？
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sum = 0 x = 1 n = 1 while True: if n > 20: break sum = sum + x x = x * 2 n = n + 1 print sum 1048575 然而 sum = 0 x = 1 n = 1 while True: if n > 20: break n = n + 1 x = x * 2 sum = sum + x print (sum) 2097150 为什么？
2016-11-09
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