The code below shows a Contact Management System. Without using the Class concept, migrating the C code project (structural mode) to the C++ environment. Original Code: You must convert this C file into C++ environments CODE: CONTACT MANAGEMENT SYSTEM #include #include #include #include #include #include struct contact { long ph; char name[20],add[20],email[30]; } list; char query[20],name[20]; FILE *fp, *ft; int i,n,ch,l,found; int main() { main: system("cls"); /* ************Main menu *********************** */ printf("\n\t **** Welcome to Contact Management System ****"); printf("\n\n\n\t\t\tMAIN MENU\n\t\t=====================\n\t\t[1] Add a new Contact\n\t\t[2] List all Contacts\n\t\t[3] Search for contact\n\t\t[4] Edit a Contact\n\t\t[5] Delete a Contact\n\t\t[0] Exit\n\t\t=================\n\t\t"); printf("Enter the choice:"); scanf("%d",&ch); switch(ch) { case 0: printf("\n\n\t\tAre you sure you want to exit?"); break; /* *********************Add new contacts************ */ case 1: system("cls"); fp=fopen("contact.dll","a"); for (;;) { fflush(stdin); printf("To exit enter blank space in the name input\nName (Use identical):"); scanf("%[^\n]",&list.name); if(stricmp(list.name,"")==0 || stricmp(list.name," ")==0) break; fflush(stdin); printf("Phone:"); scanf("%ld",&list.ph); fflush(stdin); printf("address:"); scanf("%[^\n]",&list.add); fflush(stdin); printf("email address:"); gets(list.email); printf("\n"); fwrite(&list,sizeof(list),1,fp); } fclose(fp); break; /* *********************list of contacts************************* */ case 2: system("cls"); printf("\n\t\t================================\n\t\t\tLIST OF CONTACTS\n\t\t================================\n\nName\t\tPhone No\t Address\t\tE-mail ad.\n=============================================================== ==\n\n"); for(i=97; i<=122; i=i+1) { fp=fopen("contact.dll","r"); fflush(stdin); found=0; while(fread(&list,sizeof(list),1,fp)==1) { if(list.name[0]==i || list.name[0]==i-32) { printf("\nName\t: %s\nPhone\t: %ld\nAddress\t: %s\nEmail\t: %s\n",list.name, list.ph,list.add,list.email); found++; } } if(found!=0) { printf("=========================================================== [%c]-(%d)\n\n",i-32,found); getch(); } fclose(fp); } break; /* *******************search contacts********************** */ case 3: system("cls"); do { found=0; printf("\n\n\t..::CONTACT SEARCH\n\t===========================\n\t..::Name of contact to search: "); fflush(stdin); scanf("%[^\n]",&query); l=strlen(query); fp=fopen("contact.dll","r"); system("cls"); printf("\n\n..::Search result for '%s' \n===================================================\n",query); while(fread(&list,sizeof(list),1,fp)==1) { for(i=0; i<=l; i++) name[i]=list.name[i]; name[l]='\0'; if(stricmp(name,query)==0) { printf("\n..::Name\t: %s\n..::Phone\t: %ld\n..::Address\t: %s\n..::Email\t: %s\n",list.name,list.ph,list.add,list.email); found++; if (found%4==0) { printf("..::Press any key to continue..."); getch(); } } } if(found==0) printf("\n..::No match found!"); else printf("\n..::%d match(s) found!",found); fclose(fp); printf("\n ..::Try again?\n\n\t[1] Yes\t\t[0] No\n\t"); scanf("%d",&ch); } while(ch==1); break; /* *********************edit contacts************************/ case 4: system("cls"); fp=fopen("contact.dll","r"); ft=fopen("temp.dat","w"); fflush(stdin); printf("..::Edit contact\n===============================\n\n\t..::Enter the name of contact to edit:"); scanf("%[^\n]",name); while(fread(&list,sizeof(list),1,fp)==1) { if(stricmp(name,list.name)!=0) fwrite(&list,sizeof(list),1,ft); } fflush(stdin); printf("\n\n..::Editing '%s'\n\n",name); printf("..::Name(Use identical):"); scanf("%[^\n]",&list.name); fflush(stdin); printf("..::Phone:"); scanf("%ld",&list.ph); fflush(stdin); printf("..::address:"); scanf("%[^\n]",&list.add); fflush(stdin); printf("..::email address:"); gets(list.email); printf("\n"); fwrite(&list,sizeof(list),1,ft); fclose(fp); fclose(ft); remove("contact.dll"); rename("temp.dat","contact.dll"); break; /* ********************delete contacts**********************/ case 5: system("cls"); fflush(stdin); printf("\n\n\t..::DELETE A CONTACT\n\t==========================\n\t..::Enter the name of contact to delete:"); scanf("%[^\n]",&name); fp=fopen("contact.dll","r"); ft=fopen("temp.dat","w"); while(fread(&list,sizeof(list),1,fp)!=0) if (stricmp(name,list.name)!=0) fwrite(&list,sizeof(list),1,ft); fclose(fp); fclose(ft); remove("contact.dll"); rename("temp.dat","contact.dll"); break; default: printf("Invalid choice"); break; } printf("\n\n\n..::Enter the Choice:\n\n\t[1] Main Menu\t\t[0] Exit\n"); scanf("%d",&ch); switch (ch) { case 1: goto main; case 0: break; default: printf("Invalid choice"); break; } return 0; }
The code below shows a Contact Management System. Without using the Class concept, migrating the C code project (structural mode) to the C++ environment.
Original Code:
You must convert this C file into C++ environments
CODE: CONTACT MANAGEMENT SYSTEM
#include<stdio.h>
#include<conio.h>
#include<string.h>
#include<process.h>
#include<stdlib.h>
#include<dos.h>
struct contact
{
long ph;
char name[20],add[20],email[30];
} list;
char query[20],name[20];
FILE *fp, *ft;
int i,n,ch,l,found;
int main()
{
main:
system("cls"); /* ************Main menu
*********************** */
printf("\n\t **** Welcome to Contact Management System ****");
printf("\n\n\n\t\t\tMAIN
MENU\n\t\t=====================\n\t\t[1] Add a new Contact\n\t\t[2]
List all Contacts\n\t\t[3] Search for contact\n\t\t[4] Edit a
Contact\n\t\t[5] Delete a Contact\n\t\t[0]
Exit\n\t\t=================\n\t\t");
printf("Enter the choice:");
scanf("%d",&ch);
switch(ch)
{
case 0:
printf("\n\n\t\tAre you sure you want to exit?");
break;
/* *********************Add new contacts************ */
case 1:
system("cls");
fp=fopen("contact.dll","a");
for (;;)
{
fflush(stdin);
printf("To exit enter blank space in the name
input\nName (Use identical):");
scanf("%[^\n]",&list.name);
if(stricmp(list.name,"")==0 || stricmp(list.name,"
")==0)
break;
fflush(stdin);
printf("Phone:");
scanf("%ld",&list.ph);
fflush(stdin);
printf("address:");
scanf("%[^\n]",&list.add);
fflush(stdin);
printf("email address:");
gets(list.email);
printf("\n");
fwrite(&list,sizeof(list),1,fp);
}
fclose(fp);
break;
/* *********************list of
contacts************************* */
case 2:
system("cls");
printf("\n\t\t================================\n\t\t\tLIST
OF CONTACTS\n\t\t================================\n\nName\t\tPhone
No\t Address\t\tE-mail
ad.\n===============================================================
==\n\n");
for(i=97; i<=122; i=i+1)
{
fp=fopen("contact.dll","r");
fflush(stdin);
found=0;
while(fread(&list,sizeof(list),1,fp)==1)
{
if(list.name[0]==i || list.name[0]==i-32)
{
printf("\nName\t: %s\nPhone\t: %ld\nAddress\t:
%s\nEmail\t: %s\n",list.name,
list.ph,list.add,list.email);
found++;
}
}
if(found!=0)
{
printf("===========================================================
[%c]-(%d)\n\n",i-32,found);
getch();
}
fclose(fp);
}
break;
/* *******************search contacts**********************
*/
case 3:
system("cls");
do
{
found=0;
printf("\n\n\t..::CONTACT
SEARCH\n\t===========================\n\t..::Name of contact to
search: ");
fflush(stdin);
scanf("%[^\n]",&query);
l=strlen(query);
fp=fopen("contact.dll","r");
system("cls");
printf("\n\n..::Search result for '%s'
\n===================================================\n",query);
while(fread(&list,sizeof(list),1,fp)==1)
{
for(i=0; i<=l; i++)
name[i]=list.name[i];
name[l]='\0';
if(stricmp(name,query)==0)
{
printf("\n..::Name\t: %s\n..::Phone\t:
%ld\n..::Address\t: %s\n..::Email\t:
%s\n",list.name,list.ph,list.add,list.email);
found++;
if (found%4==0)
{
printf("..::Press any key to continue...");
getch();
}
}
}
if(found==0)
printf("\n..::No match found!");
else
printf("\n..::%d match(s) found!",found);
fclose(fp);
printf("\n ..::Try again?\n\n\t[1] Yes\t\t[0] No\n\t");
scanf("%d",&ch);
}
while(ch==1);
break;
/* *********************edit
contacts************************/
case 4:
system("cls");
fp=fopen("contact.dll","r");
ft=fopen("temp.dat","w");
fflush(stdin);
printf("..::Edit
contact\n===============================\n\n\t..::Enter the name of
contact to edit:");
scanf("%[^\n]",name);
while(fread(&list,sizeof(list),1,fp)==1)
{
if(stricmp(name,list.name)!=0)
fwrite(&list,sizeof(list),1,ft);
}
fflush(stdin);
printf("\n\n..::Editing '%s'\n\n",name);
printf("..::Name(Use identical):");
scanf("%[^\n]",&list.name);
fflush(stdin);
printf("..::Phone:");
scanf("%ld",&list.ph);
fflush(stdin);
printf("..::address:");
scanf("%[^\n]",&list.add);
fflush(stdin);
printf("..::email address:");
gets(list.email);
printf("\n");
fwrite(&list,sizeof(list),1,ft);
fclose(fp);
fclose(ft);
remove("contact.dll");
rename("temp.dat","contact.dll");
break;
/* ********************delete
contacts**********************/
case 5:
system("cls");
fflush(stdin);
printf("\n\n\t..::DELETE A
CONTACT\n\t==========================\n\t..::Enter the name of
contact to delete:");
scanf("%[^\n]",&name);
fp=fopen("contact.dll","r");
ft=fopen("temp.dat","w");
while(fread(&list,sizeof(list),1,fp)!=0)
if (stricmp(name,list.name)!=0)
fwrite(&list,sizeof(list),1,ft);
fclose(fp);
fclose(ft);
remove("contact.dll");
rename("temp.dat","contact.dll");
break;
default:
printf("Invalid choice");
break;
}
printf("\n\n\n..::Enter the Choice:\n\n\t[1] Main Menu\t\t[0]
Exit\n");
scanf("%d",&ch);
switch (ch)
{
case 1:
goto main;
case 0:
break;
default:
printf("Invalid choice");
break;
}
return 0;
}
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