Question

The data analyst for ESPN needs to calculate the statistics for Lebron Jame’s recent NBA basketball game. Write a c++program to calculate the two and three point field goal percentages based on the number of total shots attempted and total shots made. Use any of Lebron Jame’s most recent game statistics to test program (i.e. can visit stats.nba.com for statistics).

In addition to main(), also use the following six functions in your program:

getNumberOfTwoPointsMade() : a value-returning function that asks for the number of two points made. Use a return statement to send it to main().

getNumberOfThreePointsMade() : a value-returning function that asks for the number of three points made. Use a return statement to send it to main(). getTotalNumberOfShotsAttempted() : a value-returning function that asks for the total number of shots attempted. Use a return statement to send it to main(). getPercentageOfTwoPointsMade() : a value-returning function that calculates the the percentage of two points made. Use a return statement to send it to main(). getPercentageOfThreePointsMade() : a value-returning function that calculates the the percentage of three points made. Use a return statement to send it to main(). IsBetterThanChance() : a value-returning function that returns true or false (true: if he made 50% or above percentages of shots and false: if he made less than 50% percentages of shots) – Display message in main() based on this return value.

NOTE: 1. The problem requires that you determine the parameters needed for each function.

2. The main() function should display the statistics on the computer screen.

3. No Global non-constant variables should be used.

Here is my solution. Is this correct?

#include<iostream>
using namespace std;

//function prototype
int getNumberOfTwoPointsMades(int);
int getNumberOfThreeOointsMades(int);
int getNumberOfShotsAttempted(int);
double getPercentageOfTwoPointsMade(int,int);
double getPercentageOfThreePointsMade(int,int);
bool isBetterThanChance(double, double);

int main() {
  

   //prompt the user to enter the number of two points made
   cout<<"Enter the number of two points made: "<<endl;
   int numOfTwoPointsMade;  
   cin>>numOfTwoPointsMade;

      //prompt the user to enter the number of three points made
   cout<<"Enter the number of three points made: "<<endl;
   int numOfThreePointsMade;
   cin>>numOfThreePointsMade;

  
   //prompt the user to enter ther number of total shots
   cout<<"Enter the total number of shots attempted: "<<endl;
   int total;
   cin>>total;

double twoPointsPercent= getPercentageOfTwoPointsMade(numOfTwoPointsMade,total);
double threePointsPercent = getPercentageOfThreePointsMade(numOfThreePointsMade,total);
bool result =isBetterThanChance(twoPointsPercent,threePointsPercent);
  
if (result==true) {
  
cout<<"It is better than chance."<<endl;
}

else {
    cout<<"It is not better than chance."<<endl;
}
  
return 0;  
  
}

int getNumberOfTwoPointsMades(int x){
return x;
}

int getNumberOfThreeOointsMades(int y){
return y;
}

int getNumberOfShotsAttempted(int z) {
return z;
}

double getPercentageOfTwoPointsMade(int x, int z){
  
double g=(x/(z*1.0))*100;
return g;
  
}

double getPercentageOfThreePointsMade(int y, int z){
  
double k=(y/(z*1.0))*100;
return k;

  
}

bool isBetterThanChance(double g, double k) {
  
   if (g>=50.0 && k>=50.0) {
  
  
   return true;

}
   else {
return false;
  
}
}

Answer 1

The last function requires some modification as per given statement. Instead of each g and k to be >=50% which means all the shots are fired we have to check (g+k)>=50 % because both 2 point and 3 point are included in shots. (This is what I got from problem statement).

Here is the code:

#include<iostream>
using namespace std;

//function prototype
int getNumberOfTwoPointsMades(int);
int getNumberOfThreeOointsMades(int);
int getNumberOfShotsAttempted(int);
double getPercentageOfTwoPointsMade(int,int);
double getPercentageOfThreePointsMade(int,int);
bool isBetterThanChance(double, double);

int main() {
  

//prompt the user to enter the number of two points made
cout<<"Enter the number of two points made: "<<endl;
int numOfTwoPointsMade;
cin>>numOfTwoPointsMade;

//prompt the user to enter the number of three points made
cout<<"Enter the number of three points made: "<<endl;
int numOfThreePointsMade;
cin>>numOfThreePointsMade;

  
//prompt the user to enter ther number of total shots
cout<<"Enter the total number of shots attempted: "<<endl;
int total;
cin>>total;

double twoPointsPercent= getPercentageOfTwoPointsMade(numOfTwoPointsMade,total);
double threePointsPercent = getPercentageOfThreePointsMade(numOfThreePointsMade,total);
bool result =isBetterThanChance(twoPointsPercent,threePointsPercent);
  
if (result==true) {
  
cout<<"It is better than chance."<<endl;
}

else {
cout<<"It is not better than chance."<<endl;
}
  
return 0;
  
}

int getNumberOfTwoPointsMades(int x){
return x;
}

int getNumberOfThreeOointsMades(int y){
return y;
}

int getNumberOfShotsAttempted(int z) {
return z;
}

double getPercentageOfTwoPointsMade(int x, int z){
  
double g=(x/(z*1.0))*100;
return g;
  
}

double getPercentageOfThreePointsMade(int y, int z){
  
double k=(y/(z*1.0))*100;
return k;

  
}

bool isBetterThanChance(double g, double k) {
  
if (g+k>=50.0) {
  
  
return true;

}
else {
return false;
  
}
}

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Sample output:

Sample output: