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2 answers:
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Answer:
I am writing a C++ code.
#include <iostream> // for input output functions
using namespace std; // identifies objects like cin cout
int main() { //start of main() function body
string c_string; // stores the string entered by user from land water or air
int land=0; // contains the number of times land string is read in
int air=0; //contains the number of times air string is read in
int water = 0; //contains the number of times water string is read in
cin>>c_string; //reads the string entered by user from air water or land
/*while loop continues to execute until user enters xxxxx or maximum length of a string exceeds 8 */
while(c_string!= "xxxxx" && c_string.length()<=8) {
if(c_string=="land"){ // if string entered by user is land
land = land + 1;} //counts and increments each occurrence of land string by 1
else if(c_string=="air"){// if string entered by user is air
air = air + 1;}// counts and increments each occurrence of string air by 1
else if(c_string=="water"){// if string entered by user is water
water = water + 1;}//counts and increments each occurrence of air by 1
cin>>c_string;}
/* keeps reading the string entered by user from land air or water, until the loop breaks after the user enters xxxxx or user enters a string whose length is greater than 8 */
//prints the number of times land, air and water are read in
cout << "land:"<<land;
cout << endl<<"air:"<<air;
cout << endl<< "water:"<<water; }
Explanation:
Everything is well explained in the comments above.
The program prompts the user to input strings. These strings are either land air or water. The while loop continues to read the input strings until user enters xxxxx or the string entered by user exceeds the length 8. Both these terminating conditions are added in the while loop. After the loop terminates, the number of times land, air and water strings are read is displayed on the output screen. Any other string entered by user other than these 3 is ignored. The program along with the output is attached.
The question is not complete! Here is the complete question and its answer!
Create a lottery game application. Generate three random numbers (see Appendix D for help in doing so), each between 0 and 9. Allow the user to guess three numbers. Compare each of the user’s guesses to the three random numbers and display a message that includes the user’s guess, the randomly determined three-digit number, and the amount of money the user has won as follows:
no matches: 0
any one matching: 10$
two matching: 1000$
three matching: 100000$
Code with Explanation:
#include <iostream>
using namespace std;
int main()
{
int matches=0;
int guess_1, guess_2, guess_3;
int num_1, num_2, num_3;
// get 3 digits from the user
cout<<"Enter first guess digit 0 to 9"<<endl;
cin>>guess_1;
cout<<"Enter second guess digit 0 to 9"<<endl;
cin>>guess_2;
cout<<"Enter third guess digit 0 to 9"<<endl;
cin>>guess_3;
// every time program runs srand() generates new random numbers and rand()%10 makes sure that number is single digit 0 to 9
srand(time(NULL));
num_1=rand()%10;
cout<<"First lottery digit: "<<num_1<<endl;
num_2=rand()%10;
cout<<"Second lottery digit: "<<num_2<<endl;
num_3=rand()%10;
cout<<"Third lottery digit: "<<num_3<<endl;
// store random generated numbers and guess numbers in arrays to compare them
int num[3]= {num_1,num_2,num_3};
int guess[3]={guess_1,guess_2,guess_3};
// compare the arrays to find out how many are matching
for(int i=0; i<3; i++)
{
for(int j=0; j<3; j++)
{
if(num[i]==guess[j])
{
matches = matches + 1;
}
}
}
cout << "Total Matches are: " <<matches << endl;
// display reward according to the number of matches
if (matches==0)
cout<<"you won: $0"<<endl;
if (matches==1)
cout<<"you won: $10"<<endl;
if (matches==2)
cout<<"you won: $1000"<<endl;
if (matches==3)
cout<<"you won: $100000"<<endl;
return 0;
}
Output:
Enter first guess digit 0 to 9
7
Enter second guess digit 0 to 9
1
Enter third guess digit 0 to 9
5
First lottery digit: 3
Second lottery digit: 7
Third lottery digit: 2
Total Matches are: 1
You won: $10
Enter first guess digit 0 to 9
7
Enter second guess digit 0 to 9
3
Enter third guess digit 0 to 9
4
First lottery digit: 5
Second lottery digit: 4
Third lottery digit: 7
Total Matches are: 2
You won: $1000
