题目 1967:
蓝桥杯算法提高VIP-sign函数
时间限制: 2s
内存限制: 192MB 提交: 460 解决: 313
题目描述
给定实数x，输出sign(x)的值。
sign(x)是符号函数，如果x>0，则返回1；如果x=0，则返回0；如果x<0，则返回-1。
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