How do I fix the function string?

[JSwizzle]

This is what I have so far:

// This program changes 'the' to 'that'
#include <iostream>
#include <string>
using namespace std;

// Function prototype
void replaceSubstring(string1, string2, string3);

int main ()
{
   // Define three string objects.
   string string1, string2, string3;

   // Assign values to all three.
   string1 = "the dog jumped over the fence";
   string2 = "the";
   string3 = "that";

   return 0;
}

//************************************************************
// Definition of the replaceSubstring function. This function*
// searches the strings for 'the'.                           *
//************************************************************

void replaceSubstring(string1, string2, string3)
{
   string1.find('the');   // Find 'the'
         string1.insert("that");
   }

I am trying to replace all instances of 'the' with 'that'. I know it should be fairly simple, but for some reason, I need some help.

Also, do any of you experience peculiar program errors when running Microsoft Visual Basic? I've had to reinstall mine several times...

Thanks in advance.

[Banfa]

Start by declaring it correctly. The most basic text books or C++ tutorials should show examples of calling a function with parameters.

You need to give the parameter type and optionally the parameter name.

[whodgson]

There are aspects of the code posted that look uncommonly like VB
e.g. string1.find('t he'); // Find 'the'
string1.insert( "that");

[Banfa]

Your not up on your std::string C++ STL class, it has both of those methods :D