用switch case写一个图书馆管理系统的C程序
问题
如何使用C编程存储图书馆图书相关信息。
算法
Step 1: Declare a structure which holds data membersStep 2: declare variables which are used for loop
Step 3: use switch case to work on each module
Step 4: case 1- for Adding book information
Case 2- for Display book information
Case 3- for Finding number for books in library
Case 4- for EXIT
程序
#include<stdio.h>输出结果#include<conio.h>
#include<stdlib.h>
#include<string.h>
struct library{
char bookname[50];
char author[50];
int noofpages;
float price;
};
int main(){
struct library lib[100];
char bookname[30];
int i,j, keepcount;
i=j=keepcount = 0;
while(j!=6){
printf("\n1. Add book information\n");
printf("2.Display book information\n");
printf("3. no of books in the library\n");
printf("4. Exit");
printf ("\n\nEnter one of the above : ");
scanf("%d",&j);
switch (j){
/* Add book */
case 1:
printf ("Enter book name = ");
scanf ("%s",lib[i].bookname);
printf ("Enter author name = ");
scanf ("%s",lib[i].author);
printf ("Enter pages = ");
scanf ("%d",&lib[i].noofpages);
printf ("Enter price = ");
scanf ("%f",&lib[i].price);
keepcount++;
i++;
break;
case 2:
printf("you have entered the following information\n");
for(i=0; i<keepcount; i++){
printf ("book name = %s\n",lib[i].bookname);
printf ("\t author name = %s\n",lib[i].author);
printf ("\t pages = %d\n",lib[i].noofpages);
printf ("\t price = %f\n",lib[i].price);
}
break;
case 3:
printf("\n No of books in library : %d", keepcount);
break;
case 4:
exit (0);
}
}
return 0;
}
1. Add book information2.Display book information
3. no of books in the library
4. Exit
Enter one of the above : 1
Enter book name = HarryPotter
Enter author name = hp
Enter pages = 250
Enter price = 350.6
1. Add book information
2.Display book information
3. no of books in the library
4. Exit
Enter one of the above : 2
you have entered the following information
book name = HarryPotter
author name = hp
pages = 250
price = 350.600006
1. Add book information
2.Display book information
3. no of books in the library
4. Exit
Enter one of the above : 3
No of books in library : 1
1. Add book information
2.Display book information
3. no of books in the library
4. Exit
Enter one of the above : 4
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