struct student
{
string number;
string Name;
.
.
.
};

#include<iostream>
#include<stdlib.h>

using namespace std;
struct student
{
string name;
string number;       
};
int main()

{

student *iptr; //pointer for new operator,creating an array of structs   
iptr=0;

int i=0;
iptr=new student[2];//for two students only
do


{

cout<<"\nEnter id number ";
getline(cin,iptr[i].number);
cout<<endl<<"Enter name  " ;
getline(cin,iptr[i].name);
++i;
}

while(i<2);
cout<<endl<<"NAME"<<"\t"<<"ID\n";
for(int j=0;j<i;++j)
{
cout<<iptr[j].name<<"\t"<<iptr[j].number;
cout<<endl;
//write to files,if you want to.
}


delete iptr;
return 0;
}

cout << "Please enter the Student Number: \n";
     getline(cin, studentNumber);
     if (isalpha(studentNumber) || isdigit(studentNumber)) //Validate studentNumber to be alpha/digits format only.
     
     writeFile(studentNumber);

void input() //Function definition for input.
{
     const int SIZE = 10;
     char studentNumber[SIZE]; //Set strings to hold data entered by the user.
     
     cout << "Please enter the Student Number: \n";
     cin.getline(studentNumber, SIZE);
     if(validateNumber(studentNumber, SIZE))
     {
     cout << studentNumber << endl;
     }
     else
     cout << "NOOOO\n";
     
     
}

bool validateNumber (char number[], int size)
     {
                    for(int count = 0; count < 10; count++)
                    {
                            if (isalnum(number[count]))
                            {
                            return true;
                            }
                    }
                            return false;
     }