1.代码分析
2.代码
#include <stdio.h>#include <time.h>#include <conio.h>#ifndef CLOCKS_PER_SEC#define CLOCKS_PER_SEC 1000#endifint main( void ){clock_t start;long count = 1;start = clock();while(1){if((clock() - start) == CLOCKS_PER_SEC){printf("%ld\n",count++);start = clock();//break;}}getch();}
3. 代码抽象出一个定时器函数 void timer(long time)
void timer(long time){clock_t start;long count = 1;start = clock();while(1){if((clock() - start) != (time*CLOCKS_PER_SEC)){//时间没有到,啥也不做,空循环}else {//时间到了退出循环// printf("%s","hello");break;}}}
完整代码
#include <stdio.h>#include <time.h>#include <conio.h>#ifndef CLOCKS_PER_SEC#define CLOCKS_PER_SEC 1000#endif/*** time 的单位为s*/void timer(long time){clock_t start;long count = 1;start = clock();while(1){if((clock() - start) != (time*CLOCKS_PER_SEC)){//时间没有到,啥也不做,空循环}else {//时间到了退出循环// printf("%s","hello");break;}}}int main( void ){for(int i=0;i<10;i++){timer(1);printf("%d\n",i);}getch();}