Question

The code will not run and I get the following errors in Visual Studio. Please fix the errors.

error C2079: 'inputFile' uses undefined class 'std::basic_ifstream<char,std::char_traits<char>>'
cpp(32): error C2228: left of '.open' must have class/struct/union
(32): note: type is 'int'
): error C2065: 'cout': undeclared identifier
error C2065: 'cout': undeclared identifier
error C2079: 'girlInputFile' uses undefined class 'std::basic_ifstream<char,std::char_traits<char>>'
error C2440: 'initializing': cannot convert from 'const char [68]' to 'int'
note: There is no context in which this conversion is possible
error C2065: 'cout': undeclared identifier
error C2065: 'cout': undeclared identifier
error C2672: 'getline': no matching overloaded function found
error C2784: 'std::basic_istream<_Elem,_Traits> &std::getline(std::basic_istream<_Elem,_Traits> &,std::basic_string<_Elem,_Traits,_Alloc> &)': could not deduce template argument for 'std::basic_istream<_Elem,_Traits> &' from 'int'
1>c:\program files (x86)\microsoft visual studio\2017\enterprise\vc\tools\msvc\14.14.26428\include\string(160): note: see declaration of 'std::getline'

#include<iostream>
#include<fstream>
#include<string.h>
#include "stdafx.h"
#include <string>

using namespace std;

const int SIZE = 200;

int mostPopular(string names[], string name);

int mostPopular(string popularNames[], string name, int n) {

   for (int i = 0; i<n; i++) {
       if (name == popularNames[i])
           return 1;
   }
   return 0;
}

int main() {

   string boys[SIZE];
   string girls[SIZE];

   string girlName, boyName;
   int i = 0, j = 0;

   ifstream boyInputFile("BoyNames.txt");

   if (boyInputFile) {
       cout << "Boys file opened successfully\n";
   }
   else {
       cout << "Error opening file BoyNames.txt!\n";

   }

   ifstream girlInputFile("GirlNames.txt");

   if (girlInputFile) {
       cout << "Girls file opening successfully\n";
   }
   else {
       cout << "Error opening file GirlNames.txt!\n";
   }

   while (getline(boyInputFile, boys[i])) {
       i++;
   }
   while (getline(girlInputFile, girls[j])) {
       j++;
   }

   boyInputFile.close();
   girlInputFile.close();

   cout << "\nEnter a boy's name: ";
   getline(cin, boyName);

   cout << "\nEnter a girl's name: ";
   getline(cin, girlName);

   if (mostPopular(boys, boyName, i) == 1) {
       cout << boyName << " is a most popular boy name\n";
   }
   else {
       cout << boyName << " is not a most popular name\n";
   }

   if (mostPopular(girls, girlName, j) == 1) {
       cout << girlName << " is a most popular name\n";
   }
   else {
       cout << girlName << " is not a most popular girl name\n";
   }

   return 0;
}

Answer 1

#include<iostream>

#include<fstream>

#include<string.h>

#include <string>

using namespace std;

const int SIZE = 200;

int mostPopular(string names[], string name);

int mostPopular(string popularNames[], string name, int n) {

   for (int i = 0; i<n; i++) {

       if (name == popularNames[i])

           return 1;

   }

   return 0;

}

int main() {

   string boys[SIZE];

   string girls[SIZE];

   string girlName, boyName;

   int i = 0, j = 0;

   ifstream boyInputFile("BoyNames.txt");

   if (boyInputFile) {

       cout << "Boys file opened successfully\n";

   }

   else {

       cout << "Error opening file BoyNames.txt!\n";

   }

   ifstream girlInputFile("GirlNames.txt");

   if (girlInputFile) {

       cout << "Girls file opening successfully\n";

   }

   else {

       cout << "Error opening file GirlNames.txt!\n";

   }

   while (getline(boyInputFile, boys[i])) {

       i++;

   }

   while (getline(girlInputFile, girls[j])) {

       j++;

   }

   boyInputFile.close();

   girlInputFile.close();

   cout << "\nEnter a boy's name: ";

   getline(cin, boyName);

   cout << "\nEnter a girl's name: ";

   getline(cin, girlName);

   if (mostPopular(boys, boyName, i) == 1) {

       cout << boyName << " is a most popular boy name\n";

   }

   else {

       cout << boyName << " is not a most popular name\n";

   }

   if (mostPopular(girls, girlName, j) == 1) {

       cout << girlName << " is a most popular name\n";

   }

   else {

       cout << girlName << " is not a most popular girl name\n";

   }

   return 0;

}

Sample Output

Error opening file BoyNames.txt! Error opening file GirlNames.txt! 6 Enter a boy's name: Chandler Enter a girl's name: Phoebe Chandler is not a most popular name Phoebe is not a most popular girl name 0 8