全部c语言源程序100例,经典C语言程序设计100例（十）

全部c语⾔源程序100例,经典C语⾔程序设计100例（⼗）.doc经典C语⾔程序设计100例(⼗)【程序91】题⽬：时间函数举例11.程序分析：2.程序源代码：#include"stdio.h"#include"time.h"voidmain(){time_tlt;/*definealonginttimevarible*/lt=time(NULL);/*systemtimeanddate*/printf(ctime(printf(asctime(localtime(printf(asctime(gmtime(}【程序92】题⽬：时间函数举例21.程序分析：2.程序源代码：/*calculatetime*/#include"time.h"#include"stdio.h"main(){time_tstart,end;inti;start=time(NULL);for(i=0;i<3000;i++){printf("\1\1\1\1\1\1\1\1\1\1\n");}end=time(NULL);printf("\1:Thedifferentis%6.3f\n",difftime(end,start));}【程序93】题⽬：时间函数举例31.程序分析：2.程序源代码：/*calculatetime*/#include"time.h"#include"stdio.h"main(){clock_tstart,end;inti;doublevar;start=clock();for(i=0;i<10000;i++){printf("\1\1\1\1\1\1\1\1\1\1\n");}end=clock();printf("\1:Thedifferentis%6.3f\n",(double)(end-start));}【程序94】题⽬：时间函数举例4,⼀个猜数游戏，判断⼀个⼈反应快慢。(版主初学时编的)1.程序分析：2.程序源代码：#include"time.h"#include"stdlib.h"#include"stdio.h"main(){charc;clock_tstart,end;time_ta,b;doublevar;inti,guess;srand(time(NULL));printf("doyouwanttoplayit.(’y’or’n’)\n");loop:while((c=getchar())==’y’){i=rand()0;printf("\npleaseinputnumberyouguess:\n");start=clock();a=time(NULL);scanf("%d",&guess);while(guess!=i){if(guess>i){printf("pleaseinputalittlesmaller.\n");scanf("%d",&guess);}else{printf("pleaseinputalittlebigger.\n");scanf("%d",&guess);}}end=clock();b=time(NULL);printf("\1:Ittookyou%6.3fseconds\n",var=(double)(end-start)/18.2);printf("\1:ittookyou%6.3fseconds\n\n",difftime(b,a));if(var<15)printf("\1\1Youareveryclever!\1\1\n\n");elseif(var<25)printf("\1\1youarenormal!\1\1\n\n");elseprintf("\1\1youarestupid!\1\1\n\n");printf("\1\1Congradulations\1\1\n\n");printf("Thenumberyouguessis%d",i);}printf