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Answer to Question #8693 in C++ for Angela Kwee

Question #8693
getPatientPolicyNo( ): Returns the patient’s policy number.
If the patientPolicyNo is blank, then send a message to the screen and exit(2).
String getPatientPolicyNo( );

The compiler doesn't recognize the "" (space) I have in my control statement. It doesn't generate error. Can anyone help what I did wrong here? Thanks

String patientPolicyNo;

if (patientPolicyNo == "")
cerr << "Invalid policy number" << endl;

return patientPolicyNo;
Expert's answer

Try this:

#include <iostream>
#include <string>
using namespace std;

string patientPolicyNo;

string check(string str){
if ( str=="" ){
& cerr << "Invalid policy number" << endl;
& exit(2);
return str;


void main(){

printf("Enter the patient policy number: ");

getline(cin, patientPolicyNo);



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