Input file cannot be opened

[syakirin]

Hello guys, I'm doing a mini project about student admission data and currently my "case c" and "case d" is not running properly. Means the name and Id I try to search based on my InputData.txt is unsuccessful. Please help me to figure out any error on my coding, thank u very much.

#include <iostream>
#include <string>
#include <fstream>
#include <iomanip>

using namespace std;

//Function to display the Menu of the program
void MainMenu ()
{
	cout << "\t\tMAIN MENU ---------------------------------" << endl;
	cout << "\t\t-------------------------------------------" << endl;
	cout << "\t\ta : Inputs" << endl;
	cout << "\t\tb : Sort the Records on Name" << endl;
	cout << "\t\tc : Search the Record on Name" << endl;
	cout << "\t\td : Search the Record based on Admission ID" << endl;
	cout << "\t\te : Save Data into text file" << endl;
	cout << "\t\tf : Load Data from text file" << endl;
	cout << "\t\tg : Quit" << endl;
	cout << "\t\t-------------------------------------------" << endl;
}

//Structure to capture user data on student's details
struct InputData
{
	string	Name;
	string	Father_Name;
	string	Address;
	string	Phone_Number;
	string	Admission_Id;
	double QualifyingTest[3];
	double Admission_Interview[3];
	double MeritScore;
	int Rank;
};

int main() 
{
	InputData Student[100];
	char MenuChoosed;
	int ArraySize;
	double Total_a, Total_b, Total_c;
	int Counter = 1;
	
	do
	{ 		
		cout << "\n\t\t\tSTUDENTS ADMISSION DATABASE     " << endl;
		cout << "\n" << endl;
		MainMenu();
		cout <<"\nChoose your menu : ";
		cin >> MenuChoosed;
		
		switch (MenuChoosed)
		{
		case 'a' :
		case 'A' :
				{
				cout << "Enter total number of student(s) : ";
				cin >> ArraySize;
			
				
				for (int i=0; i<ArraySize; i++)
				{
					cout << "\nData for student number [" << (i+1) << "]" << endl;
					cout << "***************************************************" << endl;
					cin.ignore();
					cout << "Student Name  : ";
					getline(cin, Student[i].Name);
	 
					cout << "Father's Name : ";
					getline(cin, Student[i].Father_Name);
	
					cout << "Address       : ";
					getline(cin, Student[i].Address);
	
					cout << "Phone Number  : ";
					getline(cin, Student[i].Phone_Number);
	
					cout << "Admission ID  : ";
					getline(cin, Student[i].Admission_Id);
	
					cout << "\nMarks obtained for the followings Qualifying Test" << endl;
					cout << "-------------------------------------------------" << endl;
					cout << "\tMathematics (Over 100)     : ";
					cin >> Student[i].QualifyingTest[0];
					cout <<	"\tEnglish (Over 100)         : ";
					cin >> Student[i].QualifyingTest[1];
					cout <<	"\tThinking Skills (Over 100) : ";
					cin >> Student[i].QualifyingTest[2];
		
					cout << "\nMarks obtained during the Admission Interview" << endl;
					cout << "-----------------------------------------------" << endl;
					cout << "\tPanel 1 (Over 50) : ";
					cin >> Student[i].Admission_Interview[0];
					cout << "\tPanel 2 (Over 50) : ";
					cin >> Student[i].Admission_Interview[1];
					cout << "\tPanel 3 (Over 50) : ";
					cin >> Student[i].Admission_Interview[2];
		
					cout << "*********************end**************************" << endl;
					}
				}
			break;
			
			case 'b' :
			case 'B' :
				{
				cout << "\nThe name has been successfully sorted" << endl;
				cout << "*************************************" << endl;
				cout << "\n" << endl;
				
				string temp;
        char order;
        
        cout<<"Sort by (a)ascending or (d)descending ? "<<endl;
        cin>>order;
        cout<<"\nStudent Name"<<endl;
        if (order=='a')
          {
            for (int i=0;i<ArraySize;i++)
                {
                    for (int j=0;j<ArraySize;j++)
                      {
                        if (Student[i].Name < Student[j].Name)
                          {
                            temp = Student[i].Name;
                            Student[i].Name = Student[j].Name;
                            Student[j].Name = temp;
                          }
                       }        
                }
                
           } 
        else if (order=='d')
           {
                for (int i=0;i<ArraySize;i++)
                {
                    for (int j=0;j<ArraySize;j++)
                      {
                        if (Student[i].Name > Student[j].Name)
                          {
                            temp = Student[i].Name;
                            Student[i].Name = Student[j].Name;
                            Student[j].Name = temp;
                          }
                       }
                
                 }
           }
        for (int i=0;i<ArraySize;i++)
            cout<<Student[i].Name<<endl;                             
				}
			break;
			
			case 'c' :
			case 'C' :
				{
				ifstream StreamInput;
				StreamInput.open("InputData.txt");
	
				StreamInput >> ArraySize;
	            string name;
        		bool status=false;
        		cin.ignore();
        		cout<<"\nEnter name to search : ";
        		getline(cin,name);
        		for (int i=0;i<ArraySize;i++)
          		{
     
            		if (name == Student[i].Name)
              			{     
                		cout<<"\n**********Search Successful**********"<<endl;
                		cout<<"\nTest ID : "<<Student[i].Admission_Id <<"\t"<<"\t"<<"Phone Number : "<<Student[i].Phone_Number<<endl;
                		cout<<"\nName : "<<Student[i].Name<<endl;
                		cout<<"\nFather's Name : "<<Student[i].Father_Name<<endl;
                		cout<<"\nAddress : "<<Student[i].Address<<endl;
                		status=true;
            			}
                		break; 
              	        }         
                        if (status==false)           
                        cout<<"\n**********Search Unsuccessful**********"<<endl;
                        }
			break;
			
			case 'd' :
			case 'D' :
				{
				string Admission_Id;
                bool status=false;
                cin.ignore();
                cout<<"\nEnter addmission ID to search : ";
                getline(cin,Admission_Id);
                for (int i=0;i<ArraySize;i++)
               {
                    if (Admission_Id == Student[i].Admission_Id)
                    {     
                         cout<<"\n**********Search Successful**********"<<endl;
                		 cout<<"\nTest ID : "<<Student[i].Admission_Id <<"\t"<<"\t"<<"Phone Number : "<<Student[i].Phone_Number<<endl;
                		 cout<<"\nName : "<<Student[i].Name<<endl;
                		 cout<<"\nFather's Name : "<<Student[i].Father_Name<<endl;
                		 cout<<"\nAddress : "<<Student[i].Address<<endl;
                		 status=true;
                    }
                    break; 
               }
               if (status==false)
               cout<<"\n**********Search Unsuccessful**********"<<endl;
               }
			   break;

[AbstractionAnon]

lines 126-128,142-144: You're swapping only the student name. You have to swap the entire structure.

line 41: arraySize is an uninitialized variable.
Line 194: You're reading based on arraySize, but arraySize is garbage unless you've previous executed option a or c. Line 161 implies arraySize is written to the file, but you don;t account for it here.

line 159: Your title says you can;t open the input file, but I see no check here that the input file did or did not open successfully.

line 187: Your logic between C and D is inconsistent. In C, you read from the input file. You don't do so in D. I would suggest that you load the input file in only one place (F).

Your case branches are too big. Move your case branches into functions.