#include <stdio.h>
#include <string.h>
typedef struct//Declares structure to hold seven created datatypes.
{
int client_id;
char client_business_name [30];
char client_first_name [20];
char client_last_name [20];
char client_address [40];
float client_budget;
char client_business_info [300];
}Client;
main()
{
Client c[100];
void main_menu (Client[]);
main_menu (c);
system ("PAUSE");
}
void main_menu (Client c[])//Determines what the user wants to do and grants access to one of the 6 functions.
{
int choice;
do{
printf ("1.Add Client\n2.Delete Client\n3.Search Clients\n4.Change Client Information\n5.View Clients\n6.Terminate Program\nChoose an option from above:");
scanf ("%d",&choice);
}while (choice<1||choice>6);
if (choice==1)
{
system ("cls");
void accept (Client []);
accept (c);
}
if (choice==2)
{
system ("cls");
void realocate (Client []);
realocate (c);
}
if (choice==3)
{
system ("cls");
void search (Client []);
search (c);
}
if (choice==4)
{
system ("cls");
void change (Client []);
change (c);
}
if (choice==5)
{
system ("cls");
void view_sort (Client []);
view_sort (c);
}
if (choice==6)
{
system ("cls");
void end (Client []);
end (c);
}
}
void accept (Client c[])//Accepts data from the user.
{
int num,y=0;
printf("How Many Clients Do You Want To Add:");
scanf ("%d",&num);
system ("cls");
while (y<num)
{
printf ("\nEnter Client ID:");
scanf ("%d",&c[y].client_id);
printf ("Enter Buisness Name:");
scanf (" %[^\n]",c[y].client_business_name);
printf ("Enter Client First Name:");
scanf (" %[^\n]",c[y].client_first_name);
printf ("Enter Client Last Name:");
scanf (" %[^\n]",c[y].client_last_name);
printf ("Enter Buisness Address:");
scanf (" %[^\n]",c[y].client_address);
printf ("Enter Client Budget:");
scanf ("%f",&c[y].client_budget);
printf ("Enter Buisness Information:");
scanf (" %[^\n]",c[y].client_business_info);
y++;
}
void recall (Client []);
recall (c);
}
void realocate (Client c[])//Realocates memory of variable the user choses to delete.
{
int key,max=100;
printf ("\nEnter Client ID To Be Deleted:");
scanf ("%d",&key);
system ("cls");
int first = 0;
int last = max - 1;
int middle = (first+last)/2;
while( first <= last )
{
if (c[middle].client_id < key)
first = middle + 1;
else if (c[middle].client_id == key)
{
c[middle].client_id=c[middle+1].client_id;
strcpy(c[middle].client_business_name,c[middle+1].client_business_name);
strcpy(c[middle].client_first_name,c[middle+1].client_first_name);
strcpy(c[middle].client_last_name,c[middle+1].client_last_name);
strcpy(c[middle].client_address,c[middle+1].client_address);
c[middle].client_budget=c[middle+1].client_budget;
strcpy(c[middle].client_business_info,c[middle+1].client_business_info);
printf ("\nClient Removed!");
break;
}
else
last = middle - 1;
middle = (first + last)/2;
}
if ( first > last )
{
printf ("\nClient Not Registered\n");
}
void recall (Client []);
recall (c);
}
void search (Client c[])//Searches for data via a Binary or Linear search.
{
int choice,max=100,ch,cho;
do{
printf ("\n1.Client ID\n2.Client Buisness Name\n3.Client First Name\n4.Client Last Name\nChoose an option to search by:");
scanf ("%d",&choice);
}while (choice<1||choice>4);
if (choice==1)//Binary Search
{
system ("cls");
int search_id1;
printf("Enter Client ID:");
scanf("%d",&search_id1);
system ("cls");
int first = 0;
int last = max - 1;
int middle = (first+last)/2;
while( first <= last )
{
if (c[middle].client_id < search_id1)
first = middle + 1;
else if (c[middle].client_id == search_id1)
{
printf ("Client ID:%d",c[middle].client_id);
printf ("\nBuisness Name:%s",c[middle].client_business_name);
printf ("\nClient First Name:%s",c[middle].client_first_name);
printf ("\nClient Last Name:%s",c[middle].client_last_name);
printf ("\nBuisness Address:%s",c[middle].client_address);
printf ("\nClient Budget:%d",c[middle].client_budget);
printf ("\nBuisness Information:%s",c[middle].client_business_info);
break;
}
else
last = middle - 1;
middle = (first + last)/2;
}
if ( first > last )
{
printf("Not found!\n%d is not registered to a existing client.\n",search_id1);
}
}
else if (choice==2)//Binary Search
{
system ("cls");
char search_id2 [30];
printf("Enter Buisness Name:");
scanf(" %[^\n]",search_id2);
system ("cls");
int first = 0;
int last = max - 1;
int middle = (first+last)/2;
while( first <= last )
{
if (strcmp(c[middle].client_business_name,search_id2)<0)
first = middle + 1;
else if (strcmp(c[middle].client_business_name,search_id2)==0)
{
printf ("Client ID:%d",c[middle].client_id);
printf ("\nBuisness Name:%s",c[middle].client_business_name);
printf ("\nClient First Name:%s",c[middle].client_first_name);
printf ("\nClient Last Name:%s",c[middle].client_last_name);
printf ("\nBuisness Address:%s",c[middle].client_address);
printf ("\nClient Budget:%d",c[middle].client_budget);
printf ("\nBuisness Information:%s",c[middle].client_business_info);
break;
}
else
last = middle - 1;
middle = (first + last)/2;
}
if ( first > last )
{
printf("Not found!\n%s is not a client.\n",search_id2);
}
}
else if (choice==3)//Linear Search
{
system ("cls");
char search_id3 [20];
printf("Enter Client's First Name:");
scanf(" %[^\n]",search_id3);
system ("cls");
int x=0;
while ((strcmp(c[x].client_first_name,search_id3)!=0) && x<100)
{
if (strcmp(c[x].client_first_name,search_id3)==0)
{
printf ("Client ID:%d",c[x].client_id);
printf ("\nBuisness Name:%s",c[x].client_business_name);
printf ("\nClient First Name:%s",c[x].client_first_name);
printf ("\nClient Last Name:%s",c[x].client_last_name);
printf ("\nBuisness Address:%s",c[x].client_address);
printf ("\nClient Budget:%d",c[x].client_budget);
printf ("\nBuisness Information:%s",c[x].client_business_info);
}
else if (strcmp(c[x].client_first_name,search_id3)!=0)
{
printf("Not found!\n%s is not a client.\n",search_id3);
}
x++;
}
}
else if (choice==4)//Linear Search
{
system ("cls");
char search_id4 [20];
printf("Enter Client's Last Name:");
scanf(" %[^\n]",search_id4);
system ("cls");
int y=0;
while ((strcmp(c[y].client_first_name,search_id4)!=0) && y<100)
{
if (strcmp(c[y].client_first_name,search_id4)==0)
{
printf ("Client ID:%d",c[y].client_id);
printf ("\nBuisness Name:%s",c[y].client_business_name);
printf ("\nClient First Name:%s",c[y].client_first_name);
printf ("\nClient Last Name:%s",c[y].client_last_name);
printf ("\nBuisness Address:%s",c[y].client_address);
printf ("\nClient Budget:%d",c[y].client_budget);
printf ("\nBuisness Information:%s",c[y].client_business_info);
}
else if (strcmp(c[y].client_first_name,search_id4)!=0)
{
printf("Not found!\n%s is not a client.\n",search_id4);
}
y++;
}
}
void recall (Client []);
recall (c);
}
void recall (Client c[])
{
int choice;
do{
printf ("\n\nDo You Want To:\n1.Go Back To The Main Menu\n2.Exit\n");
scanf ("%d",&choice);
}while (choice<1 || choice>2);
if (choice==1)
{
void main_menu (Client []);
main_menu (c);
}
else if (choice==2)
{
void end (Client []);
end (c);
}
}
void end (Client c[])
{
printf ("Thank You!\n");
system ("pause");
system ("cls");
}
我知道这看起来像很多代码，但我是编程的新手，所以我希望人们对C中的代码有所了解。 该计划的主要功能是与客户打交道。 用户可以添加，删除或更改客户端，或查看和搜索特定客户端。 我主要关注的是确保我可以删除客户端，就像重新分配功能一样。我的另一个主要问题是搜索和排序功能。我想了解您对代码的看法，以及我可以做些什么来使其更好。
答案 0 :(得分：0)
将函数原型放在顶部
使用define MAX_CLIENTS 100而不是输入100
声明一个新变量Client_Count，您需要知道您有多少客户端。在这里，我将其声明为全局变量。您也可以在main中声明它，然后像使用Client
使用print_client的函数，这样您就不必重复相同的代码。
您可能必须初始化所有客户端，从零到MAX_CLIENTS，只需将client_id设置为零，因此您知道它无效或已被删除。
-
void main_menu(Client[]);
void accept(Client[]);
void realocate(Client[]);
void search(Client[]);
void view_sort(Client[]);
void change(Client[]);
void end(Client[]);
void recall(Client[]);
#define MAX_CLIENTS 100
int Client_Count;
int main()
{
Client_Count = 0;
Client c[MAX_CLIENTS];
main_menu(c);
system("pause");
return 0;
}
void main_menu(Client c[])//Determines what the user wants to do and grants access to one of the 6 functions.
{
int choice;
do{
printf("1.Add Client\n2.Delete Client\n3.Search Clients\n4.Change Client Information\n5.View Clients\n6.Terminate Program\nChoose an option from above:");
scanf("%d", &choice);
} while (choice < 1 || choice > 6);
system("cls");
if (choice == 1) accept(c);
if (choice == 2) realocate(c);
if (choice == 3) search(c);
if (choice == 4) change(c);
//if (choice == 5) view_sort(c);
if (choice == 6) end(c);
}
void accept(Client c[])//Accepts data from the user.
{
if (Client_Count < MAX_CLIENTS)
{
printf("\nEnter Client ID:");
scanf("%d", &c[Client_Count].client_id);
printf("Enter Buisness Name:");
scanf(" %[^\n]", c[Client_Count].client_business_name);
printf("Enter Client First Name:");
scanf(" %[^\n]", c[Client_Count].client_first_name);
printf("Enter Client Last Name:");
scanf(" %[^\n]", c[Client_Count].client_last_name);
printf("Enter Buisness Address:");
scanf(" %[^\n]", c[Client_Count].client_address);
printf("Enter Client Budget:");
scanf("%f", &c[Client_Count].client_budget);
printf("Enter Buisness Information:");
scanf(" %[^\n]", c[Client_Count].client_business_info);
Client_Count++;
}
else
{
printf("too many\n");
}
recall(c);
}
void print_client(Client *c)
{
printf("Client ID:%d", c->client_id);
printf("\nBuisness Name:%s", c->client_business_name);
printf("\nClient First Name:%s", c->client_first_name);
printf("\nClient Last Name:%s", c->client_last_name);
printf("\nBuisness Address:%s", c->client_address);
printf("\nClient Budget:%d", c->client_budget);
printf("\nBuisness Information:%s", c->client_business_info);
}
void search(Client c[])//Searches for data via a Binary or Linear search.
{
int choice = 0;//initialize
do{
printf("\n1.Client ID\n2.Client Buisness Name\n3.Client First Name\n4.Client Last Name\nChoose an option to search by:");
scanf("%d", &choice);
} while (choice < 1 || choice > 4);
system("cls");
if (choice == 1)//Binary Search
{
int search_id1;
printf("Enter Client ID:");
scanf("%d", &search_id1);
system("cls");
for (int i = 0; i < Client_Count; i++)
{
if (c[i].client_id == search_id1)
{
print_client(&c[i]);
return;
}
}
printf("Not found!\n%d is not registered to a existing client.\n", search_id1);
}
else if (choice == 2)//Binary Search
{
system("cls");
char search_id2[30];
printf("Enter Buisness Name:");
scanf(" %[^\n]", search_id2);
for (int i = 0; i < Client_Count; i++)
{
if (strcmp(c[i].client_business_name, search_id2) == 0)
{
print_client(&c[i]);
return;
}
}
printf("Not found!\n%s is not a client.\n", search_id2);
}
//...
recall(c);
}