77 lines
2.6 KiB
C++
77 lines
2.6 KiB
C++
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/*#############################################################################
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## Author: Shaun Reed ##
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## Legal: All Content (c) 2019 Shaun Reed, all rights reserved ##
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## ##
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## Contact: shaunrd0@gmail.com | URL: www.shaunreed.com | GitHub: shaunrd0 ##
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##############################################################################
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## launcher.cpp
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*/
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#include <iostream>
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#include <lib-launcher.hpp>
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int main () {
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// Because the launcher is this executable.. (main() will become our exe)
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// Initialize the user choice to launcher problem at runtime
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int pChoice = LAUNCH;
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// Cast the integer pChoice into an assignment for our Problem enum
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// No failsafes needed here since we know pChoice = LAUNCH
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Problem pSelect = static_cast<Problem>(pChoice);
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do
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{
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printf("\nWelcome to the cpp launcher!\n"
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"Input the problem number to run the example.\n");
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//ProblemList(); List and explain problem selection
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//ProblemSelect(); Select problem, handle errors, return result to &pSelect
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std::cin >> pChoice;
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if(pChoice == LAUNCH)
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{ // Ensure that pSelect = LAUNCH and restart
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pSelect = static_cast<Problem>(pChoice);
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std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
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RunProblem(pSelect);
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continue;
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}
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else if ( pChoice > QTY )
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{ // If we have entered a value too large, restart
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std::printf("\nThe value you entered is too large."
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"\nPlease enter a value below %d\n", QTY);
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pSelect = Problem::Launch; // Set our launcher to restart and continue
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continue;
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}
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if (!std::cin )
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{ // Check for cin error state
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std::cin.clear();
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std::cin.ignore();
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pChoice = ERROR;
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}
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// One last input check for other error values
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if (pChoice < EXIT) pChoice = ERROR;
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// Cast the integer pChoice into an assignment for our Problem enum
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pSelect = static_cast<Problem>(pChoice);
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/*
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* We should expect a clear input buffer at this point
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* Clear cin up to next endline to prepare for the next input
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* Depends on include <limits> for numeric_limits<streamsize>
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*/
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std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
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// Run the problem, print exit, or print error.
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RunProblem(pSelect);
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// Run loop until invalid or exit input recieved
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} while (pChoice > EXIT || pChoice == LAUNCH);
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// Exit the launcher if the selection is in range
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// Exit if pSelect is set to ERROR state value
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return 0;
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}
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