Hello friends, I am trying the following code and it fails with the following error:
malloc: *** error for object 0x10000d8c0: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
Program received signal: “SIGABRT”.
Here are contents of file input.txt : It has full permissions and file is successfully opened in debugger. Please help.
Jacob Anderson
Michael Thomson
Joshua Smith
Mathew Matheis
Ethan Evans
Emily Drake
Emma Patterson
Madison McPhee
Hannah Briens
Ashley Schmidt
.
#include <iostream>
#include <vector>
#include <functional>
#include <algorithm>
#include <list>
#include <fstream>
#include <string>
#include <stdio.h>
using namespace std;
struct DataType {
string lastname; // (Key) Student's Last Name
string firstname; // Student's First Name
string getKey () const
{ return lastname; } // Returns the key field
};
ostream& operator << (ostream& os, DataType myData) {
os<<myData.firstname<< " "<<myData.lastname;
return os;
}
bool operator < (DataType lhs, DataType rhs) {
if (lhs.firstname < rhs.firstname)
return true;
return false;
}
int main() {
ifstream studentFile ("input.txt"); // Student file
list <DataType> students; // Students
DataType currStudent; // One Student (has firstname,lastname)
if (! studentFile.is_open())
{
return -1;
}
while (studentFile >> currStudent.firstname >> currStudent.lastname) {
students.push_back(currStudent);
}
list<DataType>::iterator i = students.begin();
while (i != students.end()) {
cout << *i << endl ;
++i;
}
}