Question

Write a program that prints the question “Do you wish to continue?” and reads the input. If the user input is “Y”, “Yes”, “YES”, then print out “Continuing”. If the user input is “N” or “No”, “NO” then print out “Quit”. Otherwise, print “Bad Input”. Use logical operators. c++

Answer 1

/* There are following logical operators supported by C++ language.

1. && :- Called Logical AND operator. If both the operands are non-zero, then condition becomes true.
example. (A && B) is false.

2. || :- Called Logical OR Operator. If any of the two operands is non-zero, then condition becomes true.
example. (A || B) is true.

3. ! :- Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true, then Logical NOT operator will make false.
example. !(A && B) is true.
*/

// C++ program to illustrate logical operater while taking input from user

#include <iostream>
#include<string.h> // For string compare
using namespace std;

int main()
{
   // Because we have yes as maximum length so charater array of 3 element declared
char input[3];
  
   // Ask question to user for an input
cout << "Do you wish to continue? ";
cin >> input;
  
   /* Here we are using strcmp function in string.h for cpmparing input with our given criateria
       and logical or operator if any 1 condition is true then it gives output else gives error*/
      
   // This if checks for yes condition  
if( strcmp(input, "Y")==0 || strcmp(input, "Yes")==0 || strcmp(input, "YES")==0 )
cout << "\ncontinuing";
       // This if condition check for no condition  
else if( strcmp(input, "N")==0 || strcmp(input, "No")==0 || strcmp(input, "NO")==0)
cout << "\nQuit";
       // otherwise it comes here  
else
cout << "\nBad Input";
  
return 0;
}

/* output :-

1) Do you wish to continue? NO

Quit

2) Do you wish to continue? Y

continuing

3) Do you wish to continue? kjhgjh

Bad Input

*/