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#include <iostream>
#include <cmath>
 
using namespace std;
 
int main() {
	float number;
	float result;
	char answer;
 
	cout << "Please input a number." << endl;
	cin >> number;
	do {
		if (number > 0) {
			result = sqrt(number);
			cout << "Your result is: " << result << endl;
		}
		else {
			cout << "The previous number input was " << number << endl;
		}
		cout << "Would you like to continue?" << endl;
		cin >> answer;
	} while(answer == "Y");
 
	return 0;
}

prog.cpp: In function ‘int main()’:
prog.cpp:23:20: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
  } while(answer == "Y")
                    ^~~
prog.cpp:25:2: error: expected ‘;’ before ‘return’
  return 0;
  ^~~~~~

Standard output is empty