From 1bf56f8b3443a1c5fd511fd8c37034c9105e8516 Mon Sep 17 00:00:00 2001
From: tama0102 <73124308+tama0102@users.noreply.github.com>
Date: Mon, 19 Oct 2020 21:27:14 +0530
Subject: [PATCH] Add files via upload

---
 ass1.cpp | 500 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 500 insertions(+)
 create mode 100644 ass1.cpp

diff --git a/ass1.cpp b/ass1.cpp
new file mode 100644
index 0000000..84a1d2d
--- /dev/null
+++ b/ass1.cpp
@@ -0,0 +1,500 @@
+//Assingment-1 First part
+//Submitted by Shubham Agrawal 
+// 19UCS073
+
+#include<bits/stdc++.h>
+using namespace std;
+struct student
+{
+    int id;
+    string name;
+    string branch;
+};
+
+struct marks
+{
+    int id;
+    double dbms,ds,c,total;
+    double percent;
+    
+};
+
+map<int,student>mp;
+map<int,marks>mk;
+map<int,student>::iterator itr;
+student newenrty();
+student modifyname(student input);
+student modifybranch(student input);
+void search_branchwise(string s);
+void search_namewise(string s);
+
+student newentry()
+{
+    student input;
+    int i;
+    string n,b;
+    cout<<"Enter student id::";
+    cin>>i;
+
+    while(mp.find(i)!=mp.end())
+    {
+        cout<<"\nEntry is already present try whith a new one"<<endl;
+        cout<<"Enter student id::";
+        cin>>i;
+    }
+    cout<<"\nEnter name of student::";
+    cin>>n;
+    cout<<"\nEnter branch of student::";
+    cin>>b;
+    cout<<endl;
+    input.id=i;
+    input.name=n;
+    input.branch=b;
+    return input;
+}
+
+
+student modifyname(student input)
+{
+    cout<<"Enter name to be updated::";
+    string s;
+    cin>>s;
+    cout<<"\n"<<input.name<<" is changed to "<<s;
+    input.name=s;
+    return input;
+    //fwrite(&input,sizeof(student),1,out);
+
+}
+
+
+student modifybranch(student input)
+{
+    cout<<"Enter branch to be updated::";
+    string s;
+    cin>>s;
+    
+    cout<<"\n"<<input.branch<<" is changed to"<<s;
+    input.branch=s;
+    //fwrite(&input,sizeof(student),1,out);
+    return input;
+
+}
+
+
+void search_branchwise(string s)
+{
+    int flag=0;
+    for(auto i:mp)
+    {
+        if(i.second.branch==s)
+        {
+            if(!flag)
+            {
+                cout<<"STUDENT DETAILS::"<<endl;
+                cout<<"ID\t\tNAME\t\tBRANCH"<<endl;
+                flag=1;
+            }
+            cout<<i.second.id<<"\t\t"<<i.second.name<<"\t\t"<<i.second.branch<<endl;
+        }
+    }
+}
+
+
+void search_namewise(string s)
+{
+    int flag=0;
+    for(auto i:mp)
+    {
+        if(i.second.name==s)
+        {
+            if(!flag)
+            {
+                cout<<"STUDENT DETAILS::"<<endl;
+                cout<<"ID\t\tNAME\t\tBRANCH"<<endl;
+                flag=1;
+            }
+            cout<<i.second.id<<"\t\t"<<i.second.name<<"\t\t"<<i.second.branch<<endl;
+        }
+    }
+}
+void updatemarks(int id)
+{
+    cout<<"Enter subject of which marks to be updated(all letters in small case)::";
+    string s;
+    cin>>s;
+    int f=0;
+    if(s=="dbms")
+    {
+        f=1;
+        int marks;
+        cout<<"\nEnter new marks in DBMS::";
+        cin>>marks;
+        while(marks>100)
+        {
+            cout<<"\nMarks cannot exceed 100 enter marks again"<<endl;
+            cin>>marks;
+        }
+        mk[id].dbms=marks;
+        cout<<"\nMarks updated"<<endl;
+    }
+    else if(s=="ds")
+    {
+        f=1;
+        int marks;
+        cout<<"\nEnter new marks in DS::";
+        cin>>marks;
+        while(marks>100)
+        {
+            cout<<"\nMarks cannot exceed 100 enter marks again"<<endl;
+            cin>>marks;
+        }
+        mk[id].ds=marks;
+        cout<<"\nMarks updated"<<endl;
+    }
+    else if(s=="c")
+    {
+        f=1;
+        int marks;
+        cout<<"\nEnter new marks in C::";
+        cin>>marks;
+        while(marks>100)
+        {
+            cout<<"\nMarks cannot exceed 100 enter marks again"<<endl;
+            cin>>marks;
+        }
+
+        mk[id].c=marks;
+        cout<<"\nMarks updated"<<endl;
+    }
+    mk[id].total=mk[id].c+mk[id].dbms+mk[id].ds;
+    mk[id].percent=mk[id].total/3;
+    if(f==0)
+    {
+        cout<<"\nEnter correct subject"<<endl;
+        updatemarks(id);
+        return;
+    }
+}
+int main()
+{
+    //FILE *out;
+    //out=fopen("data.txt","w");
+    ifstream indata;
+    indata.open("students.txt");
+
+    if(!indata)
+    {
+        cout<<"FILE cannot be opend"<<endl;
+        return 0;
+    }
+    int x;
+    while(indata>>x)
+    {
+        student ind;
+        ind.id=x;
+        indata>>ind.name;
+        indata>>ind.branch;
+        mp[x]=ind;
+    }
+    indata.close();
+    ofstream outdata;
+    outdata.open("students.txt");
+    if(!outdata)
+    {
+        cout<<"Students FILE cannot be opend"<<endl;
+        return 0;
+    }
+
+
+    int choice;
+    
+    do
+    {
+        cout<<endl;
+        cout<<"-----------------Entry MENU-----------------\n";
+        cout<<"For a new entry press 1"<<endl<<"For modification of Name press 2"<<endl;
+        cout<<"For modification in Branch press 3"<<endl;
+        cout<<"Delete student data press 4"<<endl;
+        cout<<"Search branchwise press 5"<<endl;
+        cout<<"Search by name press 6"<<endl;
+        cout<<"To Enter marks of given entries press 7\n"<<endl;
+        cout<<"Enter your choice:: ";
+        cin>>choice;
+        cout<<endl;
+        student input;
+        student *in;
+        in=NULL;
+        switch (choice)
+        {
+            case 1:
+            {    
+                input=newentry();
+                mp[input.id]=input;
+                //fwrite(&input,sizeof(student),1,out);
+                break;
+            }
+            case 2:
+            {
+                cout<<"Enter student id whose name to be modify::";
+                int id;
+                cin>>id;
+                if(mp.find(id)==mp.end())
+                {
+                    cout<<"No such id found"<<endl;
+                    break;
+                }
+                else
+                {
+                    input=mp[id];
+                    mp[id]=modifyname(input);
+                }
+                
+                break;
+            }
+            case 3:
+            {
+                cout<<"Enter student id whose branch to be modify::";
+                int id;
+                cin>>id;
+                if(mp.find(id)==mp.end())
+                {
+                    cout<<"No such id found"<<endl;
+                    break;
+                }
+                else
+                {
+                    input=mp[id];
+                    mp[id]=modifybranch(input);
+                }
+                break;
+            }
+            case 4:
+            {
+                int id;
+                cout<<"Enter id which has to be deleted::";
+                cin>>id;
+                if(mp.find(id)==mp.end())
+                {
+                    cout<<"No such id found"<<endl;
+                    break;
+                }
+                else
+                {
+                    mp.erase(id);
+                    cout<<"Student id::"<<id<<" has been deleted"<<endl;
+                }
+                break;
+                
+                
+            }
+            case 5:
+            {
+                string s;
+                cout<<"Enter branch to be searched"<<endl;
+                cin>>s;
+                search_branchwise(s);
+                break;
+            }
+            case 6:
+            {
+                string s;
+                cout<<"Enter name to be searched"<<endl;
+                cin>>s;
+                search_namewise(s);
+                break;
+            }
+            case 7:
+                break;
+            default:
+            {   
+                cout<<"Incorrect option selected"<<endl;
+                break;
+            }
+        }
+
+    }while (choice!=7);
+    //outdata<<"ID\t\tNAME\t\tBRANCH"<<endl;
+    for(auto i:mp)
+    {
+        outdata<<i.second.id<<"\t\t"<<i.second.name<<"\t\t"<<i.second.branch<<endl;
+    }
+   //outdata.close();
+    ofstream out;
+    out.open("marks.txt");
+    if(!out)
+    {
+        cout<<" Marks FILE cannot be opend"<<endl;
+        return 0;
+    }
+    cout<<"Insert marks of all students"<<endl;
+    for(auto i:mp)
+    {
+        marks temp;
+        cout<<"Enter marks of student id:: "<<i.first<<" "<<i.second.name<<endl;
+        cout<<"Marks in DBMS::";
+        cin>>temp.dbms;
+        while(temp.dbms>100)
+        {
+            cout<<"\nMarks cannot exceed 100 Please re-enter marks in DBMS::";
+            cin>>temp.dbms;
+        }
+        cout<<"\nMarks in DS::";
+        cin>>temp.ds;
+        while(temp.ds>100)
+        {
+            cout<<"\nMarks cannot exceed 100 Please re-enter marks in DS::";
+            cin>>temp.ds;
+        }
+        cout<<"\nMarks in C::";
+        cin>>temp.c;
+        while(temp.c>100)
+        {
+            cout<<"\nMarks cannot exceed 100 Please re-enter marks in C::";
+            cin>>temp.c;
+        }
+        temp.total=temp.dbms+temp.ds+temp.c;
+        temp.percent=(temp.total*100)/300;
+        cout<<"Total marks obtained:: "<<temp.total<<" out of 300 \t\tPercentage:: "<<temp.percent*1.0<<"%\n"<<endl;
+        mk[i.first]=temp;
+
+
+    }
+    int ch;
+    do
+    {
+        double h;
+        cout<<"\n----------------Marks MENU----------------\n";
+        cout<<"Press 1 for upate marks in one of the subject of student"<<endl;
+        cout<<"Press 2 to delete student record from data\n";
+        cout<<"Press 3 for list of marks by student ID\n";
+        cout<<"Press 4 to search the student with above percentage threshold"<<endl;
+        cout<<"Press 5 to search the students of a particular BRANCH with PERCENTAGE above a threshold"<<endl;
+        cout<<"Press 6 to exit from program\n";
+        cout<<"ENTER YOUR OPTION::";
+        cin>>ch;
+        cout<<endl;
+        switch (ch)
+        {
+        case 1:
+            {
+                int id;
+                cout<<"Enter student ID of which marks to be updated:: ";
+                cin>>id;
+                if(mk.find(id)==mk.end())
+                {
+                    cout<<"\nNO such ID found\n";
+                    break;
+                }
+                updatemarks(id);
+                break;
+            }
+        case 2:
+        {
+            cout<<"\nEnter student ID to be deleted::";
+            int id;
+            cin>>id;
+            if(mk.find(id)==mk.end())
+            {
+                cout<<"\nNO such ID found\n";
+                break;
+            }
+            mk.erase(id);
+            mp.erase(id);
+            cout<<"\nID deleted\n";
+            break;
+
+        }
+        case 3:
+        {
+            cout<<"Enter student ID"<<endl;
+            int id;
+            cin>>id;
+            if(mk.find(id)==mk.end())
+            {
+                cout<<"\nNO such ID found\n";
+                break;
+            }
+            cout<<"MARKS OF ::"<<mp[id].name<<endl;
+            cout<<"DBMS\t\tDS\t\tC\t\tTOTAL\t\tPERCENTAGE"<<endl;
+            cout<<mk[id].dbms<<"\t\t"<<mk[id].ds<<"\t\t"<<mk[id].c<<"\t\t"<<mk[id].total<<"\t\t"<<mk[id].percent*1.0<<endl;
+            break;
+
+        }
+        case 4:
+        {
+            cout<<"Set a threshold percentage::";
+            cin>>h;
+            int f=1;
+            for(auto i:mk)
+            {
+                if(i.second.percent>h)
+                {
+                    if(f==1)
+                    {
+                        f=0;
+                        cout<<"\nID\t\tNAME\t\tBRANCH\t\tPERCENTAGE"<<endl;
+                    }
+                    cout<<i.first<<"\t\t"<<mp[i.first].name<<"\t\t"<<mp[i.first].branch<<"\t\t"<<i.second.percent<<endl;
+                }
+            }
+            if(f==1)
+            {
+                cout<<"\nNo such student found\n";
+            }
+            break;
+        }
+        case 5:
+        {
+            cout<<"Enter branch::";
+            string s;
+            cin>>s;
+            cout<<endl;
+            cout<<"Set a threshold percentage::";
+            cin>>h;
+            int f=1;
+            for(auto i:mk)
+            {
+                int id=i.first;
+                if(i.second.percent>h&&mp[i.first].branch==s)
+                {
+                    if(f==1)
+                    {
+                        f=0;
+                        cout<<"\nID\t\tNAME\t\tBRANCH\t\tPERCENTAGE"<<endl;
+                    }
+                    cout<<i.first<<"\t\t"<<mp[id].name<<"\t\t"<<mp[id].branch<<"\t\t"<<i.second.percent*1.0<<"%"<<endl;
+                }
+            }
+            if(f==1)
+            {
+                cout<<"\nNo such student found\n";
+            }
+            break;
+
+        }
+        case 6:
+        {
+            break;
+        }
+        
+        default:
+            cout<<"Choose correct option from menu\n";
+            break;
+        }
+
+    } while (ch!=6);
+
+    for(auto i:mp)
+    {
+        outdata<<i.second.id<<"\t\t"<<i.second.name<<"\t\t"<<i.second.branch<<endl;
+    }
+    out<<"ID\t\tMARKS IN DBMS\t\tMARKS IN DS\t\tMARKS IN C\t\tTOTAL MARKS\t\tPERCENTAGE\n";
+    for(auto i:mk)
+    {
+        out<<i.first<<"\t\t"<<i.second.dbms<<"\t\t"<<i.second.ds<<"\t\t"<<i.second.c<<"\t\t"<<i.second.total<<"\t\t"<<i.second.percent*1.00<<"%\n";
+    }
+    cout<<endl;
+    return 0;
+  
+    
+}