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#include <iostream>
#include <stdlib.h>
#include <cstring>
using namespace std;
#define MAX 5
typedef
struct contact{string name; long roll; float cpi;} info;
void inputcontact (contact student[])
{
char flag='y';int i=0;
while(i<MAX &&flag=='y')
{
cout<<"name: \n";
cin>>student[i].name;
cout<<"roll number: \n";
cin>>student[i].roll;
cout<<"CPI: \n";
cin>>student[i].cpi;
i++;
cout<<"input another? (y/n) ";
cin>>flag;
}
}
void showcontact (contact student [])
{ cout<<"Name Roll no. CPI \n";
for(int i=0;i<MAX;i++)
{
cout<<student[i].name<<" ";
cout<<student[i].roll<<" ";
cout<<student[i].cpi<<" \n";
}
}
int findname(contact student[],string nam)
{ int idx=-1;
for(int i=0;i<MAX;i++)
{
student[i].name==nam;
idx=i;break;
}
return idx;
}
int findroll(contact student[],float rol)
{ int idx=-1;
for(int i=0;i<MAX;i++)
{
student[i].roll==rol;
idx=i;break;
}
return idx;
}
void updatecontactroll(contact student[],float roll1)
{int idx=-1;char flag;contact tmp;
findroll(student,roll1);
if(idx==-1) cout<<"contact not found. ";
else
{
cout<<"name: \n";
cin>>tmp.name;
cout<<"roll number: \n";
cin>>tmp.roll;
cout<<"CPI: \n";
cin>>tmp.cpi;
cout<<student[idx].name<<" will be replaced by "<<tmp.name<<" are you sure to replace?(y/n)";
cin>>flag;
if(flag!='n') student[idx]=tmp;cout<<"sucessfully replaced.\n";
}
}
void updatecontactname(contact student[],string name1)
{int idx=-1;char flag;contact tmp;
findname(student,name1);
if (idx==-1)cout<<"contact not found. ";
else
{
cout<<"name: \n";
cin>>tmp.name;
cout<<"roll number: \n";
cin>>tmp.roll;
cout<<"CPI: \n";
cin>>tmp.cpi;
cout<<student[idx].name<<" will be replaced by "<<tmp.name<<" are you sure to replace?(y/n)";
cin>>flag;
if(flag!='n') student[idx]=tmp;cout<<"sucessfully replaced.\n";
}
}
void swap(contact *p1, contact *p2)
{
string tmp;tmp=p1->name;p1->name=p2->name;p2->name=tmp;
long tm;tm=p1->roll;p1->roll=p2->roll;p2->roll=tm;
float t;t=p1->cpi;p1->cpi=p2->cpi;p2->cpi=t;
}
void deletecontactname(contact student[],string name1)
{
int idx=-1;char flag;
idx=findname(student,name1);
if(idx==-1)cout<<"contact not found. ";
else
{
cout<<student[idx].name<<" is going to be deleted.are you sure?(y/n)\n";
cin>>flag;
if(flag!='n')
{
for(int i=idx;i<MAX;i++)
{
swap(student[i],student[i+1]);
}
student[MAX-1].name='N';
student[MAX-1].roll=0;
student[MAX-1].cpi=0;
}
}
}
void deletecontactroll(contact student[],long roll1)
{
int idx=-1;char flag;
idx=findroll(student,roll1);
if(idx==-1)cout<<"contact not found. ";
else
{
cout<<student[idx].name<<" is going to be deleted.are you sure?(y/n)\n";
cin>>flag;
if(flag!='n')
{
for(int i=idx;i<MAX;i++)
{
swap(&student[i],&student[i+1]);
}
student[MAX-1].name='N';
student[MAX-1].roll=0;
student[MAX-1].cpi=0;
}
}
}
int main()
{
contact freshy[MAX];string name1;long roll1;
for(int i=0;i<MAX;i++)
{
freshy[i].name='N';
freshy[i].roll=0;
freshy[i].cpi=0;
}
char choice;
while(1)
{
cout<<"i for input contact,s for showing all contacts,u to update a contact,d to delete a contact. \n";
cin>>choice;
switch(choice)
{
case 'i':
inputcontact(freshy);
break;
case 's':
showcontact(freshy);
break;
case 'u':
cout<<"n to search by name, r to search by roll number \n";
char up;
cin>>up;
switch(up)
{
case 'n':
cout<<"give the name: \n";
cin>>name1;
updatecontactname(freshy,name1);
break;
case 'r':
cout<<"give the roll number: \n";
cin>>roll1;
updatecontactroll(freshy,roll1);
break;
}
case 'd':
cout<<"n to search by name, r to search by roll number \n";
char upd;
cin>>upd;
switch(upd)
{
case 'n':
cout<<"give the name: \n";
cin>>name1;
deletecontactname(freshy,name1);
break;
case 'r':
cout<<"give the roll number: \n";
cin>>roll1;
deletecontactroll(freshy,roll1);
break;
}
break;
}
}
}
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