//Message Producer 1
//This program will create and send a message that will be displayed on screen to the user.

#include <windows.h>
#include <stdio.h>
#include <assert.h>

using namespace std;

int main(int argc, LPTSTR argv[]){
	
	char* userInput= (char*)malloc(25);

		void getUserInput(userInput) {

	printf("Please enter a message, under 25 characters, including /0 at the end");
	scanf("%s", userInput);

	int length = s.length(userInput);
}


while (length <25) {
	printf("Success. Message entererd correctly");
}
if	(length >25);
		printf("Error.  Message must be less than 25 characters.");


	
	//create a file mapping object

	HANDLE hMap = CreateFileMapping(	(HANDLE)0xffffffff, // file mapping object backed by paging file 
										0,					// default security
										PAGE_READWRITE,		// read/write access to memory 
										0,					// object size (high 32bits) 
										4096,				// object size (low  32bits)   
										"SysProgSharedMem"	// object name 
									);
	assert(hMap != 0);



	//map a view of the file to virtual memory and make 
	//it available to the process

	char* pProducerInput = (char*)MapViewOfFile(					hMap,
																	FILE_MAP_WRITE, 
																	0,				//offset high
																	0,				//offset low
																	0				// number of bytes to map = entire file 
																);
	assert(pProducerInput);


	//write some bytes to the shared memory, 
	//the other process should be able to read the bytes

	*pProducerInput = UserInput;
	*(pProducerInput+1) = '/0';



	//cleanup
	//i.e. unmap the view and close the handle

	UnmapViewOfFile(pProducerInput);
	CloseHandle(hMap);
}

//...
int main(int argc, LPTSTR argv[])
{
	
	char* userInput= (char*)malloc(25);

		void getUserInput(userInput) {

	printf("Please enter a message, under 25 characters, including /0 at the end");
	scanf("%s", userInput);

	int length = s.length(userInput);
}
//...