I'm fairly new to C++ and i'm trying to build a linked list with a container class called FlexString. In main() I want to instantiate the FlexString class by simply saying: "FlexString flex_str = new FlexString();" calling the constructor etc. But it won't compile, the error is at the bottom. Here is my code:
//FlexString.h file
#ifndef FLEXSTRING_CAMERON_H
#define FLEXSTRING_CAMERON_H
#include "LinkedList.h"
#include <string>
using namespace std;
using oreilly_A1::LinkedList;
namespace oreilly_A1 {
class FlexString {
public:
FlexString();
void store(std::string& s);
size_t length();
bool empty();
std::string value();
size_t count();
private:
LinkedList data_list;
};
}
#endif
Here is the .cpp file for the FlexString class:
#include "FlexString.h"
#include "LinkedList.h"
#include <string>
using namespace std;
namespace oreilly_A1 {
FlexString::FlexString() {
}
void FlexString::store(string& s) {
data_list.list_head_insert(s);
}
std::string value() {
data_list.list_getstring();
}
}
Here's the main program file.
#include <iostream>
#include <cstdlib>
#include "FlexString.h"
using namespace std;
using oreilly_A1::FlexString;
int main() {
FlexString flex_str = new FlexString();
cout << "Please enter a word: " << endl;
string new_string;
cin >> new_string;
flex_str.store(new_string);
cout << "The word you stored was: "+ flex_str.value() << endl;
}
error: conversion from 'oreilly_A1::FlexString*' to non-scalar type 'oreilly_A1::FlexString' requested. "FlexString flex_str = new FlexString();"
FlexString flex_str = new FlexString();
is wrong since the RHS of the assignment is a pointer to a FlexString
while the LHS is an object.
You can use:
// Use the default constructor to construct an object using memory
// from the stack.
FlexString flex_str;
or
// Use the default constructor to construct an object using memory
// from the free store.
FlexString* flex_str = new FlexString();
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