c++ - Passing data into a c-string within a struct in a .h file from .cpp file -

i have struct defined in .h file. must pass in info user .cpp file c-string within struct. i'm not sure how. suggestions? code employ.h file:

#ifndef employ_h_ #define employ_h_  #include <iostream> #include <string.h> #include <cstdlib>  using namespace std;  struct employ {     const int namelen = 30; //length of name strings     const int ssnlen = 11;  //length of ssn string     char firstname[namelen];        //employee first name     char lastname[namelen];     //employee last name     char midinit;           //employee middle initial     char ssn[ssnlen];           //employee social security number     int hireday,            //day hired     hiremonth,          //month hired     hireyear;           //year hired     double annsalary;       //annual salary of employee     long empnumber;         //employee number }; 

code .cpp file:

#include <iostream> #include <string.h> #include <cstdlib> #include <fstream> #include <cctype> #include "employ.h"  using namespace std;  void sort(employee*dbasearray, int numemps); void printemps(employee*dbasearray, int numemps); void printone(employee person);  int main() {     int numemps;     int count = 1;     cout << "how many employees in company? ";     cin >> numemps;     if (numemps < 1)     {         cout << "sorry, invalid number. try again: ";         cin >> numemps;     }     while (count <= numemps)     {             cout << "what employee's first name? ";         cin.getline(firstname, namelen);     }     return 0;  } 

any appreciated.

create instance of employ struct in main. can make changes employ structure?

if can make changes change char arrays have in thre std::string.

the sort algorithm using changed done in std::algorithm.

beware of using namespace std;, in fact, don't use in header file.

int main() {     int numemps;     int count = 1;     employ test; // instance     cout << "how many employees in company? ";     cin >> numemps;     if (numemps < 1)     {         cout << "sorry, invalid number. try again: ";         cin >> numemps;     }     while (count <= numemps)     {         cout << "what employee's first name? ";         cin.getline(firstname, namelen);     }     return 0;  } 

also, if use std::string you'll needing std::stringstream , std::getline, save headaches in future regarding \n.

for example using:

cout << "how many employees in company? "; cin >> numemps; if (numemps < 1) {     cout << "sorry, invalid number. try again: ";     cin >> numemps; } 

which be:

   std::string input;     while (true) {      std::cout << "how many employees in company? " << std::endl;      std::getline(cin, input);      std::stringstream mystream(input);      if (mystream >> numemps)      {        break;      } else      {        std::cout << "sorry, invalid number." << std::endl;      }    } 

for second question you'll needing dynamic array, suggest std::vector<employ>, use this.

int main() {     int numemps;     int count = 1;     cout << "how many employees in company? ";     cin >> numemps;     if (numemps < 1)     {         cout << "sorry, invalid number. try again: ";         cin >> numemps;     }     std::vector<employ> employees;     employees.resize(numemps);     std::vector<employ>::iterator it;     for(it = employees.begin(); != employees.end(); ++it)     {         std::string name;         cout << "what employee's first name? ";         std::getline(cin, name);         name.copy(it->firstname, (it->namelen)-1);         it->firstname[it->namelen] = '\0'; // told change struct char arrays strings     }     return 0;  }