Question

Develop a C++ program that plays out a round of Rock, Paper, Scissors using Functional Programming

1) Develop a function that prompts the user to enter their choice (1=Rock 2=Paper 3=Scissors)

• Return either a 1, 2, or 3 depending on the value the user has entered
• Do not continue the program until the user has entered a valid choice of 1, 2, 3

2) Develop a function that generates the computer player's choice

• Return either a 1, 2, or 3 depending on random number generation

3) Develop a function that displays which player won the game round

• Display the computer's choice here in this function
• Rock (1) beats scissors(3)
• Scissors(3) beats paper (2)
• Paper(2) beats rock (1)
• Ties should be displayed (1,1) (2,2) (3,3)

4) Develop your main function to play one round of RPS versus a randomized computer opponent

Answer 1

input code:

output:

code:

#include <iostream>
using namespace std;
int user_choice()
{
/*declare the variable*/
int choice;
/*print menu*/
cout<<"1.Rock\n2.Paper\n3.Scissors\nEnter your choice:";
/*take user input*/
cin>>choice;
/*return input*/
return choice;
}
/*computer_choice*/
int computer_choice()
{
/*seed the value*/
srand(time(NULL));
/*return choice*/
return rand()%3+1;
}
void win(int u,int c)
{
/*if user choice Rock*/
if(u==1)
{
/*if Computer choice Rock*/
if(c==1)
{
/*print tie*/
cout<<"----Tie----";
}
/*if Computer choice Paper*/
else if(c==2)
{
/*Computer win*/
cout<<"Paper beat Rock....Computer win";
}
/*if Computer choice Scissors*/
else
{
/*player win*/
cout<<"Rock beat Scissors.....User win";
}
}
/*if user choice Paper*/
else if(u==2)
{
/*if Computer choice rock*/
if(c==1)
{
/*player win*/
cout<<"Paper beat Rock....User win";
}
/*if Computer choice Paper*/
else if(c==2)
{
/*print tie*/
cout<<"----Tie----";
}
/*if Computer choice Scissors*/
else
{
/*Computer win*/
cout<<"Scissors beat Paper.....Computer win";
}
}
/*if user choice Scissors*/
else if(u==3)
{
/*if Computer choice rock*/
if(c==1)
{
/*Computer win*/
cout<<"Rock beat Scissors.....Computer win";
}
/*if Computer choice Paper*/
else if(c==2)
{
/*player win*/
cout<<"Scissors beat Paper....User win";
}
else
/*if Computer choice Scissors*/
{
/*print tie*/
cout<<"----Tie----";
}
}
else
{
/*print Invalid if none of them*/
cout<<"Invalid user input";
}
}
int main()
{
/*call function and store input*/
int u=user_choice();
int c=computer_choice();

/*call win function*/
win(u,c);
return 0;
}