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cannot convert string to char error
iam getting this error for argument 1. error: cannot convert ‘std::string’ to ‘const char*’ for argument ‘1’ to ‘int strcmp(const char*, const char*)
this is where im getting the error
int search_contacts(contact contacts[], char search)
{
cout << "Search contact by LastName:____ ";
cin >> search;
bool found = false;int size=2;
for(int index=0;index<size;index++)
{
if(strcmp(contacts[20].getlname(),search)==0)
{
found = true;
cout<<"Result found "<<endl;
break;
}
}
if(!found)
cout<<"no record found"<<endl;
}
below is most of the code
#include<iostream>
#include<string>
#include<cstdlib>
#include <stdio.h>
#include <string.h>
using namespace std;
class contact{
private:
char fn[20];
char ln[20];
Address address;
string email;
string number;
public:
void input();
void output();
void setfname(char f_n[]);
void setlname(char l_n[]);
void setaddress(Address caddress);
void setemail(string emaila);
void setnumber(string num);
string getfname();
string getlname();
Address getAddress();
string getemail();
string getnumber();
contact();
contact(char f_n[], char l_n[], string emaila,string num);
};
void menu(string opt);
int search_contacts( contact contacts[], char search);
int main(){
//char search;
const int MAX=2;
contact contacts[MAX];
cout<<contacts[20].getlname();
cout << "Enter up to " << MAX << " contacts.\n";
for (int i = 1; i <= MAX; i++)
{
contacts[0].input();
}
contacts[0].output();
return 0;
}
int search_contacts(contact contacts[], char search)
{
cout << "Search contact by LastName:____ ";
cin >> search;
bool found = false;int size=2;
for(int index=0;index<size;index++)
{
if(strcmp(contacts[20].getlname(),search)==0)
{
found = true;
cout<<"Result found "<<endl;
//cout<<"Contact Name: "<<fn<<" "<<ln<<endl;
break;
}
}
if(!found)
cout<<"no record found"<<endl;
}
void menu(string opt){
char search;
contact contacts[0];
const int MAX = 2;
cout<<"Choose(type) a Menu: search | display all(show) | exit'"<<endl;
cin>>opt;
// do this if the option selected is search
if(opt=="search")
{
search_contacts(contacts, search);
}
else if(opt=="show")
{cout<<"asfasfasfafs";
//show_all(contacts, index);
}
else if(opt=="exit")exit(0);
else if((opt!="exit")||(opt!="show")||(opt!="search"))
{
cout<<"Choose an option from the menu";
cin>>opt;
}
}
contact::contact()
{
//fn[20]=""; ln[20]=""; email=""; number="";
}
contact::contact(char f_n[], char l_n[], string emaila,string num)
{
fn[20]= f_n[20]; ln[20]= l_n[20]; email= emaila;number= num;
}
void contact::input()
{
cout<<"fn and ln separate by a space: ";
cin>>fn>>ln;
cout<<"address: ";
address.input();
cout<<"email: ";
cin>>email;
cout<<"phone number: ";
cin>>number;
}
void contact::output()
{
int opt;
char search;
contact contacts[0];
const int MAX = 2;
menu:
cout<<"Choose one of the following Menu to perform a funtion:\n Enter 1 to perform a search\n Enter 2 to show all contacts\n Enter 3 to cancel and exit program \n"<<endl;
cin>>opt;
switch (opt){
case 1: search_contacts(contacts, search);
break;
case 2:cout<<"show all function";
break;
case 3:cout<<"exit";
break;
default: cout<<"Invalid entry, terminating...";
}
}
void contact::setfname(char f_n[])
{
fn[20]= f_n[20];
}
void contact::setlname(char l_n[])
{
ln[20]= l_n[20];
}
//
void contact::setemail(string emaila)
{
email= emaila;
}
void contact::setnumber(string num)
{
number= num;
}
Address contact::getAddress()
{
return address;
}
string contact::getfname()
{
return fn;
}
string contact::getlname()
{
return ln;
}
//
string contact::getemail()
{
return email;
}
string contact::getnumber()
{
return number;
}
this is where im getting the error
int search_contacts(contact contacts[], char search)
{
cout << "Search contact by LastName:____ ";
cin >> search;
bool found = false;int size=2;
for(int index=0;index<size;index++)
{
if(strcmp(contacts[20].getlname(),search)==0)
{
found = true;
cout<<"Result found "<<endl;
break;
}
}
if(!found)
cout<<"no record found"<<endl;
}
below is most of the code
#include<iostream>
#include<string>
#include<cstdlib>
#include <stdio.h>
#include <string.h>
using namespace std;
class contact{
private:
char fn[20];
char ln[20];
Address address;
string email;
string number;
public:
void input();
void output();
void setfname(char f_n[]);
void setlname(char l_n[]);
void setaddress(Address caddress);
void setemail(string emaila);
void setnumber(string num);
string getfname();
string getlname();
Address getAddress();
string getemail();
string getnumber();
contact();
contact(char f_n[], char l_n[], string emaila,string num);
};
void menu(string opt);
int search_contacts( contact contacts[], char search);
int main(){
//char search;
const int MAX=2;
contact contacts[MAX];
cout<<contacts[20].getlname();
cout << "Enter up to " << MAX << " contacts.\n";
for (int i = 1; i <= MAX; i++)
{
contacts[0].input();
}
contacts[0].output();
return 0;
}
int search_contacts(contact contacts[], char search)
{
cout << "Search contact by LastName:____ ";
cin >> search;
bool found = false;int size=2;
for(int index=0;index<size;index++)
{
if(strcmp(contacts[20].getlname(),search)==0)
{
found = true;
cout<<"Result found "<<endl;
//cout<<"Contact Name: "<<fn<<" "<<ln<<endl;
break;
}
}
if(!found)
cout<<"no record found"<<endl;
}
void menu(string opt){
char search;
contact contacts[0];
const int MAX = 2;
cout<<"Choose(type) a Menu: search | display all(show) | exit'"<<endl;
cin>>opt;
// do this if the option selected is search
if(opt=="search")
{
search_contacts(contacts, search);
}
else if(opt=="show")
{cout<<"asfasfasfafs";
//show_all(contacts, index);
}
else if(opt=="exit")exit(0);
else if((opt!="exit")||(opt!="show")||(opt!="search"))
{
cout<<"Choose an option from the menu";
cin>>opt;
}
}
contact::contact()
{
//fn[20]=""; ln[20]=""; email=""; number="";
}
contact::contact(char f_n[], char l_n[], string emaila,string num)
{
fn[20]= f_n[20]; ln[20]= l_n[20]; email= emaila;number= num;
}
void contact::input()
{
cout<<"fn and ln separate by a space: ";
cin>>fn>>ln;
cout<<"address: ";
address.input();
cout<<"email: ";
cin>>email;
cout<<"phone number: ";
cin>>number;
}
void contact::output()
{
int opt;
char search;
contact contacts[0];
const int MAX = 2;
menu:
cout<<"Choose one of the following Menu to perform a funtion:\n Enter 1 to perform a search\n Enter 2 to show all contacts\n Enter 3 to cancel and exit program \n"<<endl;
cin>>opt;
switch (opt){
case 1: search_contacts(contacts, search);
break;
case 2:cout<<"show all function";
break;
case 3:cout<<"exit";
break;
default: cout<<"Invalid entry, terminating...";
}
}
void contact::setfname(char f_n[])
{
fn[20]= f_n[20];
}
void contact::setlname(char l_n[])
{
ln[20]= l_n[20];
}
//
void contact::setemail(string emaila)
{
email= emaila;
}
void contact::setnumber(string num)
{
number= num;
}
Address contact::getAddress()
{
return address;
}
string contact::getfname()
{
return fn;
}
string contact::getlname()
{
return ln;
}
//
string contact::getemail()
{
return email;
}
string contact::getnumber()
{
return number;
}
Also, strcmp doesn't take a char.
Did you mean to use a char* for second parameter of search_contacts? That is, to pass a C-style, null-terminated string to strcmp? If so, you can use c_str(), as strongdrink suggested. Or just use string's operator==
Where str is a string
and
do the same thing, as does
Did you mean to use a char* for second parameter of search_contacts? That is, to pass a C-style, null-terminated string to strcmp? If so, you can use c_str(), as strongdrink suggested. Or just use string's operator==
Where str is a string
strcmp(str.c_str(), "hello") == 0and
str == "hello"do the same thing, as does
str.compare("hello") == 0
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