//=========================================================================================
void GetUserInput( Calculator& calculator, char* userInput, int userInputSize )
{
bool isPartial = true;
int lineCount = 0;
userInput[0] = '\0';
// Get lines of input from the user until a complete expression is given.
// The detection of complete expressions is based entirely on parenthesis,
// so it's not smart enough to detect certain things like "1 +" as a partial statement.
while( isPartial )
{
// Present the prompt. Indicate the continuing line of input number.
printf( "%02d:Calculator: ", lineCount++ );
fflush( stdout );
// Get a line of input from the user.
char lineInput[512];
GetLineOfInput( lineInput, sizeof( lineInput ) );
// Build up the full input.
strcat_s( userInput, userInputSize, lineInput );
// Detect partial statements. If we somehow choke on the input, start over.
if( !calculator.IsPartialMathExpression( userInput, isPartial ) )
{
printf( "Calculator choked on your input. Starting over!\n\n" );
lineCount = 0;
userInput[0] = '\0';
}
}
}
