获取程序运行时间

#include<stdio.h>
#include<Windows.h>
#include<process.h>

void ()
{
	extern int x; //外部声明
	printf("%dn", x);

}
int x = 10;

//实时打印程序运行时间打印到标题上
void time(void *p)
{
	int i = 0;
	while (1)
	{
		char str[100] = { 0 };
		sprintf(str, "title 当前第%d秒", i);
		system(str);
		i++;
		Sleep(1000);

	}
}
void time2()
{
	time_t start, end;
	time(&start);//获取当前时间，放在start变量中
	Sleep(4000);
	time(&end);
	printf("%d", (unsigned)(end - start));//获取时间差
	getchar();
}
void h()
{
	printf("%d", 1);
}
void main()
{
	//Extern();
	_beginthread(time, 0, NULL);
	getchar();
}