srand (time (0))中time(0)返回的秒数为什么不会越界？
来源: 互联网 发布时间：2016-12-03
本文导语: 在GNU C Library中： Data Type: time_t This is the data type used to represent simple time. Sometimes, it also represents an elapsed time. When interpreted as a calendar time value, it represents the number of seconds elapsed since 00:00:...
在GNU C Library中：
Data Type: time_t
This is the data type used to represent simple time. Sometimes, it also represents an elapsed time. When interpreted as a calendar time value, it represents the number of seconds elapsed since 00:00:00 on January 1, 1970, ...
In the GNU C library, time_t is equivalent to long intf.
Function: time_t time (time_t *result)
The time function returns the current calendar time as a value of type time_t.
Function: void srand (unsigned int seed)
To produce a different pseudo-random series each time your program is run, do srand (time (0))
time(0)返回的是个long int型数据，而 srand()需要的是 unsigned int型数据，类型不匹配？
清朋友解惑，谢谢。
Data Type: time_t
This is the data type used to represent simple time. Sometimes, it also represents an elapsed time. When interpreted as a calendar time value, it represents the number of seconds elapsed since 00:00:00 on January 1, 1970, ...
In the GNU C library, time_t is equivalent to long intf.
Function: time_t time (time_t *result)
The time function returns the current calendar time as a value of type time_t.
Function: void srand (unsigned int seed)
To produce a different pseudo-random series each time your program is run, do srand (time (0))
time(0)返回的是个long int型数据，而 srand()需要的是 unsigned int型数据，类型不匹配？
清朋友解惑，谢谢。
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如果64位机器，我是看不到越界到那天了
如果是32位机器，我估计还能活着看到那天。
楼主试着设置时间到越界到那天以后看看，估计是2038年的某天/
如果是32位机器，我估计还能活着看到那天。
楼主试着设置时间到越界到那天以后看看，估计是2038年的某天/
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