Question

-------- C++ ------

Answer 1

Answer:

The function testInOrder is as follows:

bool testInOrder(){

bool chk= false;

   int n1, n2, n3;

   cin>>n1;cin>> n2; cin>> n3;

   if(n2>=n1 && n3 >= n2){chk = true;}

   bool result = inOrder(n1,n2,n3);

   if(result == chk){ return true;}

   else{return false;}

}

The function testmax is as follows:

bool testmax(){

   bool chk = false;

   int n1, n2;

   cin>>n1; cin>>n2;

   int mx = n1;    

   if(n2>=n1){        mx = n2;    }

   int returnMax = max(n1,n2);

   if(returnMax == mx){        chk = true;            }

   return chk;

}

The prediction program is as follows:

#include <iostream>

using namespace std;

int main(){

   int startSize,numDays;

   float aveInc;

   cout<<"Start Size: ";

   cin>>startSize;

   while(startSize<2){

       cout<<"The starting number of organisms must be at least 2.";

       cin>>startSize;    }

   cout<<"Average Daily Increase: ";

   cin>>aveInc;

   while(aveInc<1){

       cout<<"The average daily population increase must be a positive value.";

       cin>>aveInc;    }

   cout<<"Number of days: ";

   cin>>numDays;

   while(numDays<1){

       cout<<"The number of days must be at least 1.";

       cin>>numDays;    }

   for(int i = 0;i<numDays;i++){        startSize*=(1 + aveInc);    }

   cout<<"Predicted Size: "<<startSize;

}

Explanation:

testInOrder

This defines the function

bool testInOrder(){

bool chk= false;

This declares all three variales

   int n1, n2, n3;

This gets input for the three variables

   cin>>n1; cin>>n2; cin>>n3;

This correctly check if the numbers are in order, the result is saved in chk

   if(n2>=n1 && n3 >= n2){chk = true;}

This gets the result from inOrder(), the result is saved in result

   bool result = inOrder(n1,n2,n3);

If result and chk are the same, then inOrder() is correct

   if(result == chk){ return true;}

If otherwise, then inOrder() is false

   else{return false;}

testmax

This defines the function

bool testmax(){

This initializes the returned value to false

   bool chk = false;

This declares the two inputs as integer

   int n1, n2;

This gets input for the two numbers

   cin>>n1; cin>>n2;

This initializes the max of both to n1

   int mx = n1;    

This correctly calculates the max of n1 and n2

   if(n2>=n1){        mx = n2;    }

This gets the returned value from the max() function

   int returnMax = max(n1,n2);

If returnMax and max are the same, then max() is correct

   if(returnMax == mx){        chk = true;            }

   return chk;

}

Prediction program

This declares all necessary variables

   int startSize,numDays;  float aveInc;

This gets input for start size

   cout<<"Start Size: ";    cin>>startSize;

The loop is repeated until the user enters valid input (>=2) for startSize

   while(startSize<2){

       cout<<"The starting number of organisms must be at least 2.";

       cin>>startSize;    }

This gets input for average increase

   cout<<"Average Daily Increase: ";    cin>>aveInc;

The loop is repeated until the user enters valid input (>=1) for aveInc

   while(aveInc<1){

       cout<<"The average daily population increase must be a positive value.";

       cin>>aveInc;    }

This gets input for the number of days

   cout<<"Number of days: ";    cin>>numDays;

The loop is repeated until the user enters valid input (>=1) for numDays

   while(numDays<1){

       cout<<"The number of days must be at least 1.";

       cin>>numDays;    }

The following loop calculates the predicted size at the end of numDays days

   for(int i = 0;i<numDays;i++){        startSize*=(1 + aveInc);    }

This prints the predicted size

   cout<<"Predicted Size: "<<startSize;