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array and string.....

Discussion in 'C++' started by xfreebornx, Aug 31, 2009.

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  1. xfreebornx

    xfreebornx New Member

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    please i need ideas on how i will put delete function in this program...?
    tnx

    Code:
    #include<iostream>
    #include<algorithm> //for std::sort
    #include<string>
    
    using namespace std;
    
    struct student
    {
      int id;
      string name;
      string nationality;
      string gender; 
    };
    
    void insert(student array[],const  unsigned int MAX_STUDENT);  
    
    bool sortByID(const student& a, const student& b)
    {
    	return ( a.id < b.id );
    }
    
    
    char sortByName(const student& a, const student& b)
    {
    	return ( a.name < b.name);
    }
    
    char sortByNationality(const student& a, const student& b)
    {
    	return (a.nationality < b.nationality);
    }
    
    void mySort(student array[],const unsigned int MAX)
    {
    	int opt = 0;
    	cout<<"Welcome to sorting function please do the following selection"<<endl;
    	cout<<"***************************************************"<<endl;
    	cout<<"* 1.Sort by student ID"<<endl;
    	cout<<"* 2.Sort by student Name"<<endl;
        cout<<"* 3.Sort by Nationality"<<endl;
    	cout<<"***************************************************"<<endl;
    	cout<<"Selection: ";
    	cin >> opt;
    	cout<<"\n\n";
    
    	switch(opt)
    	{
    		case 1: std::sort(array,array+MAX,sortByID); break;
    		case 2:	std::sort(array,array+MAX,sortByName); break;
    		case 3:	std::sort(array,array+MAX,sortByNationality);break;
    	}
    
    }
    
    void display(const student array[], unsigned int MAX);
    int main()
    {	
    	const unsigned int MAX_SIZE = 100;
    	student array[MAX_SIZE];
    
    	int option = 0;
    	bool exitProgram = false;
    
    	do
    	{ 
    		cout <<"Welcome to student recording system"<<endl;
    		cout <<"Please choose one of the following option\n\n"<<endl;
    		cout <<"1.Insert new record"<<endl;
    		cout <<"2.Sort record"<<endl;
    		cout <<"3.Delete record"<<endl;
    		cout <<"4.Display record"<<endl;
    		cout <<"0) Exit program\n\n\n";
        
    		 cin >> option;
    
    		 switch(option)
    		 {
    			case 1: insert(array,MAX_SIZE);  break;
    
    			case 2:	cout<<"you picked sorting\n";
    					cout<<"Now sorting\n\n\n";
    					mySort(array,MAX_SIZE);
    					cout<<"Sorting done\n\n\n";
    					break;
    
    			case 3: //do delete
    			case 4:   display(array,MAX_SIZE); break;
    
    			default : exitProgram = true; break;
    		 }
    
    		}while(!exitProgram);     		
    	  
    
    	return 0;
    
    }
    void insert(student array[],const  unsigned int MAX_STUDENT)
    {
    
    	cout<<"\n\n";
    
      for(unsigned int i = 0 ; i < MAX_STUDENT; i++)
      {
    
    	cout<<"For student #"<<(i+1)<<endl<<endl;;
    	cout <<"Enter student ID: ";
        cin >>array[i].id;
        cin.ignore(100,'\n');
    	cout<<endl;
        
        cout <<"Enter student name: ";
        cin >>array[i].name;
        cin.ignore(100,'\n');
    	cout<<endl;
        
        cout <<"Enter student nationality:  ";
        cin >>array[i].nationality;
        cin.ignore(100,'\n');
    	cout<<endl;
        
        cout <<"Enter student gender:  ";
        cin >>array[i].gender;
        cin.ignore(100,'\n');
    	cout<<endl;
        }
    }
    
    void display(const student array[], unsigned int MAX)
    {
    	cout<<"\\************************************************\\"<<endl;
    	for(unsigned int i = 0; i < MAX; i++)
    	{		
    		cout<<"---------------------------------------------------"<<endl;;
    		cout<<"Student #:"<<(i+1)<<endl;
    		cout<<"ID# : "<<array[i].id<<endl;
    		cout<<"Name : "<<array[i].name<<endl;
    		cout<<"Nationality : "<<array[i].nationality<<endl;		
    		cout<<"Gender : "<<array[i].gender<<endl<<endl;
    		cout<<"---------------------------------------------------"<<endl;;
    	
    	}
    	cout<<"\n\\************************************************\\"<<endl;
    }
     
  2. SaswatPadhi

    SaswatPadhi ~ Б0ЯИ Τ0 С0δЭ ~

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