博文
图书馆管理系统(2005-09-18 11:26:00)
摘要： #include <stdio.h>
#include <stdlib.h>
#include <conio.h>
struct BOOK
{
int id,usr[10],total,store,days[10];
char name[31],author[21];
}books[100];
/*上面是结构体的定义，用于存放书籍及借书的信息。*/
void page_title(char *menu_item)
{
clrscr();
printf(">>> 图 书 管 理 系 统 <<<\n\n- %s -\n\n",menu_item);
}
/*上面是打印页眉的函数，同时通过参数menu_item，可以显示当前的状态。*/
void return_confirm(void)
{
printf("\n按任意键返回……\n");
getch();
}
/*上面是返回前请求确认的函数，以便在返回前观察结果*/
int search_book(void)
{
int n,i;
printf("请输入图书序号:");
scanf("%d",&i);
for(n=0;n<100;n++)
{
if(books[n].id==i)
{
printf("书名:%s\n",books[n].name);
printf("作者:%s\n",books[n].author);
printf("存数:%d of ",books[n].store);
printf("%d\n",books[n].total);
retur......
学生成绩管理(2005-09-18 11:26:00)
摘要： #include <stdio.h>
#include <stdlib.h>
#include <conio.h>
int INDEX[32];
struct STUDENT
{
int id,age,chinese,math,english;
char name[21];
}students[32];
void page_title(char *menu_item)
{
clrscr();
printf(">>> 学 生 管 理 系 统 <<<\n\n- %s -\n\n",menu_item);
}
void return_confirm(void)
{
printf("\n按任意键返回……\n");
getch();
}
void student_new(void)
{
int n;
page_title("录入学生基本信息");
for(n=0;n<32;n++)
if(students[n].id==0) break;
printf("学号:");
scanf("%d",&students[n].id);
printf("姓名:");
scanf("%s",&students[n].name);
printf("年龄:");
scanf("%d",&students[n].age);
return_confirm();
}
int search_id(void)
{
int n,i;
printf("请输入学生学号:");
scanf("%d",&i);
for(n=0;n......
泊车管理(2005-09-18 11:25:00)
摘要： #include<stdio.h>
#include<conio.h>
#include<stdlib.h>
int cars[16][3];
void car_park(void)
{
int n,m,o;
for(n=0;n<16;n++) if(cars[n][0]==0) break;
if(n==16)
{
printf("\n便道很拥挤.\n");
getch();
return;
}
printf("\n泊车-请输入车牌:");
scanf("%d",&o);
for(m=0;m<16;m++) if(cars[m][0]==o) break;
if(m!=16)
{
printf("\n此车已泊.\n");
getch();
return;
}
cars[n][0]=o;
if(n<10)
{
printf("请输入当前时:");
scanf("%d",&cars[n][1]);
printf("请输入当前分:");
scanf("%d",&cars[n][2]);
return;
}
else printf("\n请先在便道上等候车位");
getch();
}
void car_get()
{
int n,o,p,q,r;
printf("\n取车-请输入车牌:");
scanf("%d",&o);
for(......
C语言中字符串拷贝函数的实例(2005-09-18 11:24:00)
摘要： #include <string.h> /* strcpy */
void SafeCopy(char *Dest, int DestSize, char *Source);
main()
{
char Text1[20]="Tracy Sorrell"; /* string buffer */
char Text2[10]="Martin"; /* string buffer */
printf (" Original string contents are: %s\n", Text2);
SafeCopy(Text2, sizeof(Text2), Text1);
printf (" New string contents are: %s\n", Text2);
strcpy(Text2, "Alex");
printf (" Final string contents are: %s\n", Text2);
}
/****************************************************************/
void SafeCopy(
char *Dest, /* Destination buffer. */
int ......
C语言中的时间函数及使用实例(2005-09-18 11:24:00)
摘要： #include <stdio.h> /* NULL */
#include <time.h> /* ctime, asctime */
main()
{
time_t now; /* define 'now'. time_t is probably
* a typedef */
/* Calender time is the number of
* seconds since 1/1/1970 */
now = time((time_t *)NULL); /* Get the system time and put it
* into 'now' as 'calender time' */
printf("%s", ctime(&now)); /* Format data in 'now'
* NOTE that 'ctime' inserts a
* '\n' */
&......
C语言中的格式化写入文件函数及使用实例(2005-09-18 11:24:00)
摘要： #include <stdio.h>
main()
{
FILE *Ptr;
char Line[256];
/* ... Open a file for output. */
Ptr = fopen("/tmp/OutputFile", "w");
while(gets(Line)) /* Get data from stdin */
{
fprintf(Ptr, "%s\n", Line); /* Send data to file. */
}
fclose(Ptr);
}
......
C语言中的打开文件函数及使用实例(2005-09-18 11:23:00)
摘要： #include <stdio.h>
main()
{
int c; /* Character read from the file. */
FILE *ptr; /* Pointer to the file. FILE is a
structure defined in <stdio.h> */
/* Open the file - no error checking done */
ptr = fopen("/etc/hosts","r");
/* Read one character at a time, checking
for the End of File. EOF is defined
in <stdio.h> as -1 */
while ((c = fgetc(ptr)) !
......
一个猜数游戏，判断一个人反应快慢(2005-09-18 11:23:00)
摘要： #include "time.h"
#include "stdlib.h"
#include "stdio.h"
main()
{char c;
clock_t start,end;
time_t a,b;
double var;
int i,guess;
srand(time(NULL));
printf("do you want to play it.('y' or 'n') \n");
loop:
while((c=getchar())=='y')
{
i=rand()%100;
printf("\nplease input number you guess:\n");
start=clock();
a=time(NULL);
scanf("%d",&guess);
while(guess!=i)
{if(guess>i)
{printf("please input a little smaller.\n");
scanf("%d",&guess);}
else
{printf("please input a little bigger.\n");
scanf("%d",&guess);}
}
end=clock();
b=time(NULL);
printf("\1: It took you %6.3f seconds\n",var=(double)(end-start)/18.2);
printf("\1: it took you %6.3f seconds\n\n",difftime(b,a));
if(var<15)
printf("\1\1 You are very clever! \1\1\n\n");
getch(); }
}......
时间显示(2005-09-18 01:43:00)
摘要：#include <stdio.h>
#include <time.h>
int main(void)
{
time_t t;
t = time(NULL);
printf("Current date is %s", ctime(&t));
t -= 24L*60L*60L; /* Back up to same time previous day */
stime(&t);
printf("\nNew date is %s", ctime(&t));
getch();
return 0;
}
......
人事记录(2005-09-18 01:43:00)
摘要：#include <stdio.h>
#include <conio.h>
int main(void)
{
char label[20];
char name[20];
int entries = 0;
int loop, age;
double salary;
struct Entry_struct
{
char name[20];
int age;
float salary;
} entry[20];
/* Input a label as a string of characters restricting to 20 characters */
printf("\n\nPlease enter a label for the chart: ");
scanf("%20s", label);
fflush(stdin); /* flush the input stream in case of bad input */
/* Input number of entries as an integer */
printf("How many entries will there be? (less than 20) ");
scanf("%d", &entries);
fflush(stdin); /* flush the input stream in case of bad input */
/* input a name restric......