[求助]关于数据类型的问题
LONGLONG begin_time;LONGLONG end_time;
double time_fre;
double time_elapsed;
LARGE_INTEGER litmp;
QueryPerformanceFrequency(&litmp);
time_fre = (double)litmp.QuadPart;
解释一下: longlong
LARGE_INTEGER 的数据类型
QueryPerformanceFrequency的用法
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解释一下memset(z,0,sizeof(z)) 功能 和用法
大虾帮忙啊