奔图m5000打印机共享

的程序

提示：此题可能没有标准答案。

/*BenTu M5000 Printer Share Program

// include necessary libraries
#include
#include
#include

// define the necessary constants
#define MAX_CHAR_LEN 700

// declare the global variables
int deviceFD;

// function to connect to the printer
int connectPrinter()
{
deviceFD = open("/dev/m5000_printer_port", O_RDWR);
if (deviceFD == -1)
return -1;

return 0;
}

// function to disconnect from the printer
void disconnectPrinter()
{
close(deviceFD);
}

// function to print a document
int printDoc(char* content)
{
// check that the document does not exceed the max character length
if (strlen(content) > MAX_CHAR_LEN)
return -1;

// write the document to the printer
int bytesWritten = write(deviceFD, content, strlen(content));

return 0;
}

// main function to test the printer sharing program
int main()
{
// connect to the printer
int result = connectPrinter();
if(result == -1)
return -1;

// print a document
result = printDoc("This is a test document to be printed by the M5000 printer.");
if(result == -1)
return -1;

// disconnect from the printer
disconnectPrinter();

return 0;
}