Question

 

Write codes that will produce the screen as shown Firstly, the program prompts user to enter his name. Then it will display Hello <user name>. Next it prints out a menu which contains 5 options (1- add two integers, 2- add two strings, 3- compute factorial, 4- reverse a string, 5- quit program). Code all 5 tasks appropriately. When the task is completed (not including quitting program of course), the menu pops up again and asks user to try on another task. This repeats until ‘q' or ‘Q' is pressed. You may use “switch-case" or “if-else", but the former looks more legible Even though you may know how to write functions, do not use functions in this program.

Hints

Task 1 - Simple cin, and cout.

Task 2 - Use strcpx (check lecture notes Chpt 1.2.7.1)

Task 3 - Use a loop (while or for)

Task 4 - This is pretty hard. Use a while loop but needs some thinking

Repeating menu: Use gato-label statements, or an appropriate loop 

Answer 1

#include
#include
using namespace std;

int main()
{
string name;
char choice;

cout<<"Enter name please\n>>";
cin>>name;
cout<<"Hello "<

do
{
cout<<"==========MENU============="< cout<<"Please select one:\n";
cout<<"\'1\' - Add two integers"< cout<<"\'2\' - Add two strings"< cout<<"\'3\' - Compute factorial of an integers(n!)"< cout<<"\'4\' - Reverse a string"< cout<<"\'Q\' - Quit program"< cout<<"==========================="<>";
cin>>choice;

switch(choice)
{
case '1':
{
int n1,n2;
cout<<"Enter two integers\n>>";
cin>>n1>>n2;
cout<<"The sum is "<<(n1+n2)<

}
break;
case '2':
{
string str1,str2,result;
cout<<"Enter two strings\n>>";
cin>>str1>>str2;
result=str1+str2;
cout<<"The result is "< }
break;
case '3':
{
int n,fact=1;
cout<<"Enter positive integer n.\n>>";
cin>>n;
for(int i=2; i<=n; i++)
fact*=i;
cout<

}
break;
case '4':
{
char str[100],temp;
int i=0, j;
cout<<"Enter string to be reversed \n>>";
cin>>str;

j=strlen(str)-1;
while(i {
temp=str[i];
str[i]=str[j];
str[j]=temp;
i++;
j--;
}

cout<<"Reversed string = "<

}
break;
case 'Q':
case 'q':
{

cout<<"Program quitting..."< }
break;
default:
cout<<"Invalid choice!"< }
if(choice=='q'||choice=='Q') break;
}

while(true);

return 0;
}

OUTPUT: