It might not be a bug, but I don't know what is going wrong. My first entry is repeated for str1 on 2nd iteration, and is same way from then. Only first iteration goes good.
#include <iostream>
#include <string>
using namespace std;
int main () {
cout << " \n Enter two words. \n " ;
char c = 'y';
string str;
string str1;
while (c == 'y'){
getline(cin,str);
getline (cin,str1);
cout << " \n\n str : " << str << " str1 : " << str1 ;
cout << " \n Continue ? \n " ;
cin >> c;
}
return 0;
}
The output is :
Enter two words. hello world this is mr str : hello world str1 : this is mr Continue ? y hello world str : str1 : hello world Continue ? n
As rob says.
But an alternative fix that looks nicer:
When dealing with manual user input you should be careful of using the >> operator as this will always leave the '\n' on the input. Which means you can either use a method that retrieves the '\n' character (getline()) or you can manually remove it afterwords (ignore()).
Add
after your
Consider the following input:
If we examine the characters that are present in the input stream individually, we'll see:
The first call to
getline
consumesdog\n
; the second consumescat\n
, leaving this:The first call to
cin >> c
consumes onlyy
but not the subsequent newline, leaving this:Now, the fun begins: What happens during the next call to
getline
? Why it reads up to the next newline, of course. So the next call togetline
returns an empty line, and leavesowl...
in the input stream.The solution, as I outlined above, is to consume the remainder of the (now useless) input line.