Student Management System in C++

This is a Character based User Interface or CUI based simple computerized solution to manage the system activities. This prototype code saves time and energy of its user by automating certain tasks. This system is either file handling type or ROM type, and stores activities in a coder-defined file or on ROM memory temporarily.

C++ is a typed language, so no need of code explanation as everything will be cleared by itself by reading the code. If you know C++, you know this code. It’s that simple!

Note to students, draw a class diagram and flow chart of system by reading the code itself. The Code::Blocks IDE 20.03+MinGW and Cygwin tool are used to test the code.

Note that some systems are very simple and need enhancement but they are complete on their own in other terms.

	StudentManagementSystem.cpp
	#include<iostream>   using namespace std;   string arr1[20],arr2[20],arr3[20],arr4[20],arr5[20]; int total=0;   void enter() {     int ch=0;     cout<<"How many students do u want to enter??"<<endl;     cin>>ch;     if(total==0)     {         total=ch+total;         for(int i=0; i<ch; i++)         {             cout<<"\nEnter the Data of student "<<i+1<<endl<<endl;             cout<<"Enter name ";             cin>>arr1[i];             cout<<"Enter Roll no ";             cin>>arr2[i];             cout<<"Enter course ";             cin>>arr3[i];             cout<<"Enter class ";             cin>>arr4[i];             cout<<"Enter contact ";             cin>>arr5[i];           }     }     else     {           for(int i=total; i<ch+total; i++)         {             cout<<"\nEnter the Data of student "<<i+1<<endl<<endl;             cout<<"Enter name ";             cin>>arr1[i];             cout<<"Enter Roll no ";             cin>>arr2[i];             cout<<"Enter course ";             cin>>arr3[i];             cout<<"Enter class ";             cin>>arr4[i];             cout<<"Enter contact ";             cin>>arr5[i];         }         total=ch+total;     }   } void show() {     if(total==0)     {         cout<<"No data is entered"<<endl;     }     else     {         for(int i=0; i<total; i++)         {             cout<<"\nData of Student "<<i+1<<endl<<endl;             cout<<"Name "<<arr1[i]<<endl;             cout<<"Roll no "<<arr2[i]<<endl;             cout<<"Course "<<arr3[i]<<endl;             cout<<"Class "<<arr4[i]<<endl;             cout<<"Contact "<<arr5[i]<<endl;         }     } } void search() {     if(total==0)     {         cout<<"No data is entered"<<endl;     }     else     {         string rollno;         cout<<"Enter the roll no of student"<<endl;         cin>>rollno;         for(int i=0; i<total; i++)         {             if(rollno==arr2[i])             {                 cout<<"Name "<<arr1[i]<<endl;                 cout<<"Roll no "<<arr2[i]<<endl;                 cout<<"Course "<<arr3[i]<<endl;                 cout<<"Class "<<arr4[i]<<endl;                 cout<<"Contact "<<arr5[i]<<endl;             }         }     } } void update() {     if(total==0)     {         cout<<"No data is entered"<<endl;     }     else     {         string rollno;         cout<<"Enter the roll no of student which you want to update"<<endl;         cin>>rollno;         for(int i=0; i<total; i++)         {             if(rollno==arr2[i])             {                 cout<<"\nPrevious data"<<endl<<endl;                 cout<<"Data of Student "<<i+1<<endl;                 cout<<"Name "<<arr1[i]<<endl;                 cout<<"Roll no "<<arr2[i]<<endl;                 cout<<"Course "<<arr3[i]<<endl;                 cout<<"Class "<<arr4[i]<<endl;                 cout<<"Contact "<<arr5[i]<<endl;                 cout<<"\nEnter new data"<<endl<<endl;                 cout<<"Enter name ";                 cin>>arr1[i];                 cout<<"Enter Roll no ";                 cin>>arr2[i];                 cout<<"Enter course ";                 cin>>arr3[i];                 cout<<"Enter class ";                 cin>>arr4[i];                 cout<<"Enter contact ";                 cin>>arr5[i];             }         }     } }   void deleterecord() {     if(total==0)     {         cout<<"No data is entered"<<endl;     }     else     {         int a;         cout<<"Press 1 to delete all record"<<endl;         cout<<"Press 2 to delete specific record"<<endl;         cin>>a;         if(a==1)         {             total=0;             cout<<"All record is deleted..!!"<<endl;         }         else if(a==2)         {             string rollno;             cout<<"Enter the roll no of student which you wanted to delete"<<endl;             cin>>rollno;             for(int i=0; i<total; i++)             {                 if(rollno==arr2[i])                 {                     for(int j=i; j<total; j++)                     {                         arr1[j]=arr1[j+1];                         arr2[j]=arr2[j+1];                         arr3[j]=arr3[j+1];                         arr4[j]=arr4[j+1];                         arr5[j]=arr5[j+1];                     }                     total--;                     cout<<"Your required record is deleted"<<endl;                 }             }         }             else         {             cout<<"Invalid input";         }     } } main() {     int value;     while(true)     {         cout<<"\nPress 1 to enter data"<<endl;         cout<<"Press 2 to show data"<<endl;         cout<<"Press 3 to search data"<<endl;         cout<<"Press 4 to update data"<<endl;         cout<<"Press 5 to delete data"<<endl;         cout<<"Press 6 to exit"<<endl;         cin>>value;         switch(value)         {         case 1:             enter();             break;         case 2:             show();             break;         case 3:             search();             break;         case 4:             update();             break;         case 5:             deleterecord();             break;         case 6:             exit(0);             break;         default:             cout<<"Invalid input"<<endl;             break;         }     } }
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