String Error validation thru a function

[Theadmin77]

I dont know what i am doing wrong , i am trying to validate a string entry (first name to only take lower and upper case letters) thru a function , but for some reason is not working ....=0(

Any idea why ?

This is the code

#include<iostre am>

using namespace std;
bool getstring (char[30]);

struct nameuser
{
char first[30];
char last [30];
};

struct studentype
{
nameuser name;
char nid [30];
float score;
};

void main()
{
studentype student [100];
float curve=0.0;
int i;
int nstudents;
bool validata;

do
{
cout<<"Enter the number of students [0-100]:";
cin>>nstudents;

if ((nstudents<1)| |(nstudents>100 ))
{
cout<<"Incorrec t value .Try Again !!"<<endl;
}
}while ((nstudents<1)| |(nstudents>100 ));


for (i=0;i<nstudent s;i++)
{
cout <<"Enter information for student#"<<i+1< <endl;

do
{
cout <<"First name :";

validata= getstring(stude nt[i].name.first);

if(!validata)
{
cout <<"Wrong input ...Try Again !!! \n";
}

}while (!validata);


cout <<"Last name :";
cin >>student[i].name.last;
cout <<"nid:";
cin >>student[i].nid;
cout <<"Enter score between [0-100]:";
cin >>student[i].score;

}
};

// function to check valid data:


bool getstring (char[]);

{

int i;
bool noerrors = true;

cin.getline (student[i].name.first,30) ;

i=0;

while ((i< strlen(student[i].name.first)) && noerrors)

{
if ((student[i].name.first<'A' ) || (student[i].name.first[i]>'z'))
{
lenght=strlen(s tudent[i].name.first);

noerrors=false;
}

i++;
}

return noerrors;
}

[sivadhas2006]

Hi,

I did some changes in your code to make it work.

#include<iostream>

using namespace std;

struct structUserName
{
   char szFirst[30];
   char szLast[30];
};

struct structStudent
{
   structUserName name;
   char  nID[30];
   float fScore;
};

bool GetString (char *a_pszString)
{
   int 
      i = 0,
      nStrLength = 0;
   
//   cin.getline (a_s1.name.szFirst,30);
//   fgets(a_s1.name.szFirst, sizeof(a_s1.name.szFirst), stdin);
   cin >> a_pszString; 

   nStrLength = strlen(a_pszString);
   for(i = 0; i < nStrLength; i++)
   {
      if(isalpha(a_pszString[i]) == false)
      {
         return false;
      }      
   }   
   return true;
}


void main()
{
   structStudent
      student [100];
   float 
      fCurve = 0.0;
   int 
      i = 0,
      nStudents = 0;

   bool 
      bValidData = false;

   do
   {
      cout<<"Enter the number of students [0-100]:";
      cin>>nStudents;

      if (nStudents<1 || nStudents>100)
      {
         cout<<"Incorrect value .Try Again !!"<<endl;
      }
   }
   while (nStudents<1 || nStudents>100);


   for (i=0; i < nStudents; i++)
   {
      cout <<"Enter information for student#"<<i+1<<endl;

      do
      {
         cout <<"First name :";

         bValidData = GetString(student[i].name.szFirst);
         if(bValidData == false)
         {
            cout <<"Wrong input ...Try Again !!! \n";
         }
      }
      while (bValidData == false);

      cout <<"Last name :";
      cin >>student[i].name.szLast;
      cout <<"nID:";
      cin >>student[i].nID;
      cout <<"Enter Score between [0-100]:";
      cin >>student[i].fScore;
   }
};

Regards,
M.Sivadhas.

[Theadmin77]

Thank you very much for your help!!!!

[sivadhas2006]

Thank you very much for your help!!!!

Hi,

You are welcome to http://www.thescripts.com/.

Regards.
M.Sivadhas.