make a selection in c++ code example
Example: c++ give options string
string StringOptionsBox(int count, ...)
{
bool bValidSelection = 1;
do
{
//set the border options
char sczCorners = '+';
char sczVerticalFillers = '|';
char sczHorizontalFillers = '-';
char sczGeneralFillers = ' ';
// set the spacing options
int iLineWidth = 50;
int iOptionSpace = 25;
int iNumberSpace = 3;
int iTabSpace = 3;
int iRightSpace = iLineWidth - iOptionSpace - iNumberSpace - iTabSpace - 1;
va_list arguments; // A place to store the list of arguments
va_start(arguments, count); // Initializing arguments to store all values after count
//////////////////////////////////////////////////////////////////////////////////////
// LAYOUT THE INTERFACE AND PROMPT THE USER'S SELECTION //
//////////////////////////////////////////////////////////////////////////////////////
//Top line of the output
cout << sczCorners << setw(iLineWidth) << setfill(sczHorizontalFillers) << ""
<< sczCorners << "\n";
//Main Lines of the output
for (int i = 1; i <= count; i++)
{
cout << sczVerticalFillers;
cout << setw(iNumberSpace) << setfill(sczGeneralFillers) << right << i << ".";
cout << setw(iTabSpace) << setfill(sczGeneralFillers) << left << "";
cout << setw(iOptionSpace) << setfill(sczGeneralFillers) << left << va_arg(arguments, char *);
cout << setw(iRightSpace) << setfill(sczGeneralFillers) << left << "" << sczVerticalFillers << "\n";
}
//Bottom line of the output
cout << sczCorners << setw(iLineWidth) << setfill(sczHorizontalFillers) << "" << sczCorners << "\n";
va_end(arguments); // Cleans up the list
// User's selection process
string sSelected;
cout << "\nSelect one of the above options: ";
std::getline(cin, sSelected);
//////////////////////////////////////////////////////////////////////////////////////
// RETRIEVE THE STRING THAT WAS SELECTED //
//////////////////////////////////////////////////////////////////////////////////////
va_list arguments2; // A place to store the list of arguments
va_start(arguments2, count); // Initializing arguments to store all values after count
//Main Lines of the output
for (int i = 1; i <= count; i++)
{
if (i == atoi(sSelected.c_str()))
{
return va_arg(arguments2, char *); // returns the string that was selected
}
else if (i != count)
{
va_arg(arguments2, char *);
}
else
{
va_arg(arguments2, char *);
}
}
va_end(arguments2);
//////////////////////////////////////////////////////////////////////////////////////
// MAKE PROVISIONS FOR IF THE SELECTION IS INCORRECT //
//////////////////////////////////////////////////////////////////////////////////////
cout << "\nERROR \nThe option that you have selected - " << sSelected << " - does not exist. Please try again. \n\n";
bValidSelection = 0;
} while (bValidSelection != 1);
}