Сравнение полей структур

#include<stdlib.h>
#include<iostream>
using namespace std;
 
struct libr
{
char journal[10];
int nomer;
char family[10];
};
 
 
int main()
{int i,N;
struct libr A[3];
struct libr poisk;
cout<<"Vvedite kolichestvo svedeniy--> "; cin>>N;
cout<<"Vvedite nazvanie zhurnala, nomer zhurnala i familiyu chitatelya cherez =PROBEL= "<<endl;
for (i=0;i<N;i++)  
    {cout<<i<<"-ogo chitatelya"<<endl;
    cin>>A[i].journal>>A[i].nomer>>A[i].family;
    }
cout<<endl<<"Vvedite nazvanie iskomogo zhurnala--> "; cin>>poisk.journal;
for (i=0;i<N;i++)  
    {if ((A[i].journal)!=(poisk.journal))cout<<"Совпадений нет!! ";
    else cout<<A[i].family<<endl;
    }
system("PAUSE");
}

if ((A[i].journal)!=(poisk.journal))

#include <cstring>
#include <iostream>
using namespace std;
 
const int LEN = 20;
 
struct libr
{
    char journal[LEN];
    int nomer;
    char family[LEN];
};
 
int main()
{
    int i, n;
    char poisk[LEN] ;
    cout << "Vvedite kolichestvo svedeniy: "; 
    cin >> n;
    libr* ArrLib = new libr[n];
    cout << "Vvedite nazvanie zhurnala, nomer zhurnala, familiyu chitatelya: \n";
    for ( i = 0; i < n; ++i)  
    {
        cout << "Chitatel #" << i+1 << ":\n";
        cin >> ArrLib[i].journal >> ArrLib[i].nomer >> ArrLib[i].family;
    }
    cout <<"Vvedite nazvanie iskomogo zhurnala: "; 
    cin >> poisk;
    for ( i = 0; i < n; i++ )  
    {
        if ( strcmp(ArrLib[i].journal, poisk) == 0 )
            cout << "Chitatel: " << ArrLib[i].family << endl;
    }
    delete [] ArrLib;
}

#include<stdlib.h>
#include<iostream>
#include<iomanip.h>
using namespace std;
 
struct libr
{
char journal[10];
int nomer;
char family[10];
};
 
 
int main()
{int i,N;
struct libr A[3];
char poisk[10];
cout<<"Vvedite kolichestvo svedeniy--> "; cin>>N;
cout<<"Vvedite nazvanie zhurnala, nomer zhurnala i familiyu chitatelya cherez =PROBEL= "<<endl;
for (i=0;i<N;i++)  
    {cout<<"Chitatelya ¹"<<i+1<<endl;
    cin>>A[i].journal>>A[i].nomer>>A[i].family;
    }
cout<<endl<<"Vvedite nazvanie iskomogo zhurnala--> "; cin>>poisk;
cout<<setw(10)<<"Ôàìèëèÿ"<<setw(10)<<"Íîìåð"<<endl;
for (i=0;i<N;i++)  
    {if (strcmp(A[i].journal,poisk)==0) cout<<setw(10)<<A[i].family<<setw(10)<<A[i].nomer<<endl;
    }
system("PAUSE");
}

libr A[3];

#include<stdlib.h>
#include<iostream>
#include<iomanip.h>
using namespace std;
 
struct libr
{
char journal[10];
int nomer;
char family[10];
};
 
 
int main()
{int i,j,N;
char poisk[10];
cout<<"Vvedite kolichestvo svedeniy--> "; cin>>N;
struct libr A[N];
cout<<"Vvedite nazvanie zhurnala, nomer zhurnala i familiyu chitatelya cherez =PROBEL= "<<endl;
for (i=0;i<N;i++)  
    {cout<<"Chitatelya ¹"<<i+1<<endl;
    cin>>A[i].journal>>A[i].nomer>>A[i].family;
    }
cout<<endl<<"Vvedite nazvanie iskomogo zhurnala--> "; cin>>poisk;
cout<<setw(10)<<"Familiya"<<setw(10)<<"Nomer"<<endl;
for (i=0;i<N;i++)  
    {if (strcmp(A[i].journal,poisk)==0) cout<<setw(10)<<A[i].family<<setw(10)<<A[i].nomer<<endl;
    }
 
system("PAUSE");
}

    int n;
    cin >> n;
    int ar[n]; // ошибка

    for (i=0; i<N; ++i)
    {
        if ( !strcmp(A[i].journal, poisk) ) 
            cout << setw(10) << A[i].family << setw(10) << A[i].nomer << endl;
    }