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// Do Programming Project 11 from Chapter 3 except write a function named
//containsDigit that determines if a number contains a particular digit. The
//header should look like: bool containsDigit(int number, int digit);
// If number contains digit , then the function should return true . Otherwise,
//the function should return false . Your program should use this function
//to find the closest numbers that can be entered on the keypad.
//The keypad on your oven is used to enter the desired baking temperature
//and is arranged like the digits on a phone:
//1 2 3
//4 5 6
//7 8 9
//0
//Unfortunately the circuitry is damaged and the digits in the leftmost col-
//umn no longer function. In other words, the digits 1, 4, and 7 do not work.
//If a recipe calls for a temperature that can’t be entered, then you would
//like to substitute a temperature that can be entered. Write a program that
//inputs a desired temperature. The temperature must be between 0 and 999
//degrees. If the desired temperature does not contain 1, 4, or 7, then output
//the desired temperature. Otherwise, compute the next largest and the next
//smallest temperature that does not contain 1, 4, or 7 and output both.
//For example, if the desired temperature is 450, then the program
//should output 399 and 500. Similarly, if the desired temperature is
//375, then the program should output 380 and 369.
#include <iostream>
bool isNum(int number, int digit);
bool containsDigit(int number, int digit);
int main()
{
using namespace std;
int temp;
int ones_digit, tens_digit, hundreds_digit;
bool contains_147;
bool num;
// get valid temp
do {
cout << "Please enter temp" << endl;
cin >> temp;
}
while (num = false);
// check if temp has a 1, 4, or 7
int lowertemp = temp;
ones_digit = lowertemp % 10;
tens_digit = (lowertemp/10) % 10;
hundreds_digit = (lowertemp/100);
if ((ones_digit==1) || (ones_digit ==4) || (ones_digit ==7) ||
(tens_digit==1) || (tens_digit ==4) || (tens_digit ==7) ||
(hundreds_digit==1) || (hundreds_digit ==4) || (hundreds_digit ==7))
contains_147 = true;
else
contains_147 = false;
while (contains_147)
{
// lowertemp contains the closest lower temp without 1,4, or 7
lowertemp--;
ones_digit = lowertemp % 10;
tens_digit = (lowertemp/10) % 10;
hundreds_digit = (lowertemp/100);
if ((ones_digit==1) || (ones_digit ==4) || (ones_digit ==7) ||
(tens_digit==1) || (tens_digit ==4) || (tens_digit ==7) ||
(hundreds_digit==1) || (hundreds_digit ==4) || (hundreds_digit ==7))
contains_147 = true;
else
contains_147 = false;
}
int highertemp = temp;
ones_digit = highertemp % 10;
tens_digit = (highertemp/10) % 10;
hundreds_digit = (highertemp/100);
if ((ones_digit==1) || (ones_digit ==4) || (ones_digit ==7) ||
(tens_digit==1) || (tens_digit ==4) || (tens_digit ==7) ||
(hundreds_digit==1) || (hundreds_digit ==4) || (hundreds_digit ==7))
contains_147 = true;
else
contains_147 = false;
while (contains_147)
{
highertemp++;
ones_digit = highertemp % 10;
tens_digit = (highertemp/10) % 10;
hundreds_digit = (highertemp/100);
if ((ones_digit==1) || (ones_digit ==4) || (ones_digit ==7) ||
(tens_digit==1) || (tens_digit ==4) || (tens_digit ==7) ||
(hundreds_digit==1) || (hundreds_digit ==4) || (hundreds_digit ==7)){
contains_147 = true;
}
else
{
contains_147 = false;
}
}
cout << "The next closest lower temperature is " << lowertemp << endl;
cout << "The next closest higher temperature is " << highertemp << endl;
char ch;
cin >> ch;
return 0;
}
bool isNum(int number, int digit)
{
bool num;
if ((digit==1) || (digit ==2) || (digit ==3) || (digit ==4) || (digit ==5) ||
(digit==6) || (digit ==7) || (digit ==8) || (digit ==9) || (digit ==0))
num = true;
else
num = false;
return num;
bool containsDigit(int number, int digit)
{
if ((digit==1) || (digit ==4) || (digit ==7))
contains_147 = true;
else
contains_147 = false;
}
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