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197 | /// @author Alexander Corey
/// @attention I pledge my word of honor that I have abided by the CSN
/// Academic Integrity Policy while completing this assignment.
/// @file pa04.cpp
/// @date 2017-10-01
/// @brief This program prompts the user to enter five numbers and then
/// presents them with a menu of number operations to choose from.
/// @note I spent approximately 4 to 5 hours developing this program.
/// I used the clear and ignore functions to restore the program back
/// to working order in the likely event that the user put it into a
/// fail state. I used Xcode for the majority of the program's
/// development which sped up the debugging process.
#include <iostream>
#include <string>
using namespace std;
int main()
{
// Local Const variables
const string SM_CHOICE = "Smallest value"; // smallest value text
const string LG_CHOICE = "Largest value"; // largest value text
const string SUM_CHOICE = "Sum of values"; // sum of values text
const string AVG_CHOICE = "Average of values"; // avg of values text
const string CHOICE_A = "a."; // choice a menu string
const string CHOICE_B = "b."; // choice b menu string
const string CHOICE_C = "c."; // choice c menu string
const string CHOICE_D = "d."; // choice d menu string
const string OPENING_PROMPT = "Please enter five numbers, separated by"
" spaces"; // opening prompt text
const string MENU_PROMPT = "Please enter the letter of the choice you"
" desire"; // menu prompt text
const string RETRY_PROMPT = "It doesn't look like anything to me."
" Please try again."; // text that prompts user to run program again
const string ERROR_MESSAGE = "It doesn't look like anything to me."
" Please restart the program."; // text for error message
const string SM_VALUE_IS = "The smallest value is "; // text for
// smallest value calculation message printed for user
const string LG_VALUE_IS = "The largest value is "; // text for
//largest value calculation message printed for user
const string SUM_IS = "The sum of values is "; // text for
// sum of values calculation message printed for user
const string AVG_IS = "The average of values is "; // text for
// average of values value calculation message printed for user
const char period = '.'; // period character for misc uses
const char space = ' '; // space character for misc uses
// Local variables
double userInput1 = 0.0; // holds first value input by user
double userInput2 = 0.0; // holds second value input by user
double userInput3 = 0.0; // holds third value input by user
double userInput4 = 0.0; // holds fourth value input by user
double userInput5 = 0.0; // holds fifth value input by user
double smallestValue; // holds smallest value calculation
double largestValue; // holds largest value calculation
double sumValues; // holds sum of values calculation
double avgValues; // holds average of values calculation
char menuChoice = 0; // holds menu choice input by user
// INPUT
cout << OPENING_PROMPT << "\n";
cin >> userInput1 >>userInput2 >> userInput3 >> userInput4
>> userInput5;
// Checks input failure
if (!cin)
{
// Restores program to working state if user input is invalid
cin.clear();
cin.ignore(200, '\n');
cout << RETRY_PROMPT << "\n";
cout << OPENING_PROMPT << "\n";
cin >> userInput1 >>userInput2 >> userInput3 >> userInput4
>> userInput5;
if (!cin)
cout << ERROR_MESSAGE << "\n";
else {
cout << MENU_PROMPT << "\n";
cout << CHOICE_A << space << SM_CHOICE << "\n";
cout << CHOICE_B << space << LG_CHOICE << "\n";
cout << CHOICE_C << space << SUM_CHOICE << "\n";
cout << CHOICE_D << space << AVG_CHOICE << "\n";
cin >> menuChoice;
}
}
else
{
cout << MENU_PROMPT << "\n";
cout << CHOICE_A << space << SM_CHOICE << "\n";
cout << CHOICE_B << space << LG_CHOICE << "\n";
cout << CHOICE_C << space << SUM_CHOICE << "\n";
cout << CHOICE_D << space << AVG_CHOICE << "\n";
cin >> menuChoice;
}
// SWITCH - PROCESS AND OUTPUT
// menu choice A/a logic
switch (menuChoice) {
case 'A':
smallestValue = userInput1;
if (smallestValue >= userInput2)
smallestValue = userInput2;
if (smallestValue >= userInput3)
smallestValue = userInput3;
if (smallestValue >= userInput4)
smallestValue = userInput4;
if (smallestValue >= userInput5)
smallestValue = userInput5;
cout << SM_VALUE_IS << smallestValue << period;
break;
case 'a':
smallestValue = userInput1;
if (smallestValue >= userInput2)
smallestValue = userInput2;
if (smallestValue >= userInput3)
smallestValue = userInput3;
if (smallestValue >= userInput4)
smallestValue = userInput4;
if (smallestValue >= userInput5)
smallestValue = userInput5;
cout << SM_VALUE_IS << smallestValue << period;
break;
// menu choice B/b logic
case 'B':
largestValue = userInput1;
if (largestValue <= userInput2)
largestValue = userInput2;
if (largestValue <= userInput3)
largestValue = userInput3;
if (largestValue <= userInput4)
largestValue = userInput4;
if (largestValue <= userInput5)
largestValue = userInput5;
cout << LG_VALUE_IS << largestValue << period;
break;
case 'b':
largestValue = userInput1;
if (largestValue <= userInput2)
largestValue = userInput2;
if (largestValue <= userInput3)
largestValue = userInput3;
if (largestValue <= userInput4)
largestValue = userInput4;
if (largestValue <= userInput5)
largestValue = userInput5;
cout << LG_VALUE_IS << largestValue << period;
break;
// menu choice C/c logic
case 'C':
sumValues = userInput1 + userInput2 + userInput3 + userInput4
+ userInput5;
cout << SUM_IS << sumValues << period;
break;
case 'c':
sumValues = userInput1 + userInput2 + userInput3 + userInput4
+ userInput5;
cout << SUM_IS << sumValues << period;
break;
case 'd':
sumValues = userInput1 + userInput2 + userInput3 + userInput4
+ userInput5;
avgValues = sumValues/5;
cout << AVG_IS << avgValues << period;
break;
// menu choice D/d logic
case 'D':
sumValues = userInput1 + userInput2 + userInput3 + userInput4
+ userInput5;
avgValues = sumValues/5;
cout << AVG_IS << avgValues << period;
break;
// default menu choice
default:
if (cin) {
cout << ERROR_MESSAGE;
break;
}
}
cout << endl;
return 0;
}
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