有时还是很有必要的:
#include
#include
int access(const char *pPath, int mode);
F_OK:文件是否存在
R_OK:读
W_OK:写
X_OK:执行
#define LOCK_FILE "quantum6.lock"
if (access(LOCK_FILE, W_OK) != -1)
{
printf("%s can write.\n", LOCK_FILE);
}
else
{
printf("%s can not write.\n", LOCK_FILE);
}