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tomstevelfq avatar tomstevelfq commented on June 16, 2024

if (base > INT_MAX / 10 || (base == INT_MAX / 10 && str[i] - '0' > 7)) 这一步因为INT_MIN是-2147483648 ,INT_MAX是2147483647
所以str[i] - '0' > 7在sign=-1的时候应该是str[i] - '0' > 8吧

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grandyang avatar grandyang commented on June 16, 2024

if (base > INT_MAX / 10 || (base == INT_MAX / 10 && str[i] - '0' > 7)) 这一步因为INT_MIN是-2147483648 ,INT_MAX是2147483647 所以str[i] - '0' > 7在sign=-1的时候应该是str[i] - '0' > 8吧

写成大于7是为了同时包含正负两种情况的,当是 -2147483648 的时候, (base == INT_MAX / 10 && str[i] - '0' > 7) 也是满足的,所以也可以返回 INT_MIN

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tomstevelfq avatar tomstevelfq commented on June 16, 2024

绝了,脑子没转过来弯。谢谢你,没想到能这么快收到回复

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