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<P><FONT
color=#990000>【程序91】</FONT><BR>题目：时间函数举例1<BR>1.程序分析：<BR>2.程序源代码：<BR>#include
"stdio.h"<BR>#include "time.h"<BR>void main()<BR>{
time_t lt; /*define a longint time
varible*/<BR>lt=time(NULL);/*system time and
date*/<BR>printf(ctime(<)); /*english format
output*/<BR>printf(asctime(localtime(<)));/*tranfer
to tm*/<BR>printf(asctime(gmtime(<)));
/*tranfer to Greenwich
time*/<BR>}<BR>==============================================================<BR><FONT
color=#990000>【程序92】</FONT><BR>题目：时间函数举例2<BR>1.程序分析： <BR>2.程序源代码：<BR>/*calculate
time*/<BR>#include "time.h"<BR>#include
"stdio.h"<BR>main()<BR>{ time_t start,end;<BR>int
i;<BR>start=time(NULL);<BR>for(i=0;i<3000;i++)<BR>{
printf("\1\1\1\1\1\1\1\1\1\1\n");}<BR>end=time(NULL);<BR>printf("\1:
The different is
%6.3f\n",difftime(end,start));<BR>}<BR>==============================================================<BR><FONT
color=#990000>【程序93】</FONT><BR>题目：时间函数举例3<BR>1.程序分析：<BR>2.程序源代码：<BR>/*calculate
time*/<BR>#include "time.h"<BR>#include
"stdio.h"<BR>main()<BR>{ clock_t start,end;<BR>int
i;<BR>double
var;<BR>start=clock();<BR>for(i=0;i<10000;i++)<BR>{
printf("\1\1\1\1\1\1\1\1\1\1\n");}<BR>end=clock();<BR>printf("\1:
The different is
%6.3f\n",(double)(end-start));<BR>}<BR>==============================================================<BR><FONT
color=#990000>【程序94】</FONT><BR>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）<BR>1.程序分析：<BR>2.程序源代码：<BR>#include
"time.h"<BR>#include "stdlib.h"<BR>#include
"stdio.h"<BR>main()<BR>{char c;<BR>clock_t
start,end;<BR>time_t a,b;<BR>double var;<BR>int
i,guess;<BR>srand(time(NULL));<BR>printf("do you
want to play it.('y' or 'n')
\n");<BR>loop:<BR>while((c=getchar())=='y')<BR>{<BR>i=rand()%100;<BR>printf("\nplease
input number you
guess:\n");<BR>start=clock();<BR>a=time(NULL);<BR>scanf("%d",&guess);<BR>while(guess!=i)<BR>{if(guess>i)<BR>{printf("please
input a little
smaller.\n");<BR>scanf("%d",&guess);}<BR>else<BR>{printf("please
input a little
bigger.\n");<BR>scanf("%d",&guess);}<BR>}<BR>end=clock();<BR>b=time(NULL);<BR>printf("\1:
It took you %6.3f
seconds\n",var=(double)(end-start)/18.2);<BR>printf("\1:
it took you %6.3f
seconds\n\n",difftime(b,a));<BR>if(var<15)<BR>printf("\1\1
You are very clever! \1\1\n\n");<BR>else
if(var<25)<BR>printf("\1\1 you are normal!
\1\1\n\n");<BR>else<BR>printf("\1\1 you are
stupid! \1\1\n\n");<BR>printf("\1\1
Congradulations \1\1\n\n");<BR>printf("The number
you guess is %d",i);<BR>}<BR>printf("\ndo you want
to try it
again?(\"yy\".or.\"n\")\n");<BR>if((c=getch())=='y')<BR>goto
loop;<BR>}<BR>==============================================================<BR><FONT
color=#990000>【程序95】</FONT><BR>题目：家庭财务管理小程序<BR>1.程序分析：<BR>2.程序源代码：<BR>/*money
management system*/<BR>#include
"stdio.h"<BR>#include
"dos.h"<BR>main()<BR>{<BR>FILE *fp;<BR>struct date
d;<BR>float sum,chm=0.0;<BR>int len,i,j=0;<BR>int
c;<BR>char
ch[4]="",ch1[16]="",chtime[12]="",chshop[16],chmoney[8];<BR>pp:
clrscr();<BR>sum=0.0;<BR>gotoxy(1,1);printf("|---------------------------------------------------------------------------|");<BR>gotoxy(1,2);printf("|
money management system(C1.0) 2000.03
|");<BR>gotoxy(1,3);printf("|---------------------------------------------------------------------------|");<BR>gotoxy(1,4);printf("|
-- money records -- | -- today cost list --
|");<BR>gotoxy(1,5);printf("|
------------------------
|-------------------------------------|");<BR>gotoxy(1,6);printf("|
date: -------------- |
|");<BR>gotoxy(1,7);printf("| | | |
|");<BR>gotoxy(1,8);printf("| -------------- |
|");<BR>gotoxy(1,9);printf("| thgs:
------------------ |
|");<BR>gotoxy(1,10);printf("| | | |
|");<BR>gotoxy(1,11);printf("| ------------------
| |");<BR>gotoxy(1,12);printf("| cost: ----------
| |");<BR>gotoxy(1,13);printf("| | | |
|");<BR>gotoxy(1,14);printf("| ---------- |
|");<BR>gotoxy(1,15);printf("| |
|");<BR>gotoxy(1,16);printf("| |
|");<BR>gotoxy(1,17);printf("| |
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