Question

"Create a program that allows the user to input a list of first names into one array and last names into a parallel array. Input should be terminated when the user enters a sentinel character. The output should be a list of email addresses where the address is of the following form: [email protected]"

Answer 1

#include<iostream>

using namespace std;

int main()

{

string f[50],l[50],str1,str; //f[] will store firstnames and l[] lastnames

int i;

cout<<"Enter firstnames and enter # to stop\\";

cin>>str;

for(i=0;str!="#";i++) //# will be the sentinel character

{

f[i]=str;

cin>>str;

}

cout<<"Enter lastnames and enter # to stop\\";

cin>>str1;

for(i=0;str1!="#";i++)

{

l[i]=str1;

cin>>str1;

}

int n=i; //n wiill be number of elements in array

cout<<"\\List of emails are : \\";

for(i=0;i<n;i++) //loop to print list of emails

{

cout<<f[i]<<"."<<l[i]<<"@mycollege.edu"<<endl;

}

return 0;

}

OUTPUT :

Please find the attachment below.

Step-by-step explanation:

Two arrays are maintains which are f[] and l[]. f[] stores firstnames and l[] stores lastnames. First 2 loops are reading firstnames and lastnames which will break if '#' is typed as it is considered as a sentinel character here which is assured by checking the condition in the loop. Then n variable is used to store the length of the arrays. Both arrays have to be of equal length as email ids contains both firstname and lastname. Then a loop is created to print email ids of the format specified by using arrays f[] and l[].