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//说明：传递一个无符号的 long 型指针给函数，并在函数内改变这个值。
#include <stdio.h>
#include <time.h>
//传递给函数的指针
void getSeconds(unsigned long *par);
int main()
{
unsigned long sec;
getSeconds(&sec);
printf("秒数是：%ld\n",sec);
return 0;
}
void getSeconds(unsigned long *par)
{
*par=time(NULL); //获取当前秒数
return;
}
