#include <iostream>
#include <cmath>
#include <vector>
...

#include <iostream>
using std::cout;
//Challenge: Add all the natural numbers below one thousand that are multiples of 3 or 5.
...

#include <string>
#include <fstream>
#include <iomanip>
...

#include <iostream>
#include <vector>
using namespace std;
...

void drawStatusBar(char* text, int x, int y, int current, int max)	
{
	dbText(x, y-14, text);
...

// this is in the global scope of my program. normally accepted as bad code, 
// but it seems to make sense in the context of an embedded platform.
// "global" cache
...

// The required structs
struct linkedlist
{
...

#include <iostream>
#include <vector>
#include <algorithm>
...

Exactly what the title says.  I don't want to know what your "project solutions" are, or your "programming solutions"; I need to know what a solution file is and why it's used and how.  In the vast, vast, internet nobody has seemingly ever answered this question.  I
have looked... everywhere.
=========================================================================================
...

_

using namespace std;
#include <iostream>
void main ()
...

void MainDialog::OnTickTimer(wxTimerEvent& WXUNUSED(e))
{
    const wxLongLong ElapsedTime     = wxGetLocalTime() - m_TimerStartTick;
...

#include <iostream.h>

#define arrMax 100 
...

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  ø
    ,  >  R  z  ’  ¼  Î  &  *  <  P  v  œ  ¦  º  Þ    R  ¢    N  š  ö  H  ˜  ð  f  Æ  &  H  ’  Ð  	  ^	  ²	  ö	  <
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...

// Original method

int monster()
...

bool Translations::compatibleNICodes(const Rule& rule, 
                                         const std::vector<std::string>& nicodes)
    {
...

//----------------------------------------------------------------
//FindShortestPath.cpp
//
...

int width = iplImage->width;
	int height = iplImage->height;
...

#include <fstream>
using std::ofstream;
#include <time.h>
...

// handlePathChange() is called whenever the URI changes

void MVCApplication::handlePathChange()
...

#pragma once

#include <iostream>
...

#include <iostream>
#include <stdio.h>
//#include <cstdlib>
...

#include <map>
#include <string>
...

#ifndef TFN_BIBLE_H
#define TFN_BIBLE_H

...

#include <iostream>
#include <limits>
#include <map>
...