I wrote this code at the pig latin challenge it gives the same result as the one that the callenge provides yet it doesn't pass

Question

//example input
//go over there
//expected result ogay veroay heretay
#include <iostream>
using namespace std;
int main() {
string x;
while(cin>>x){
int len=x.length();
char c=x[0];
x[0]=x[len];
string z="ay";
string h=x+c+z+" ";
cout<<h;
}
return 0;
}
/*Is there a problem in the result type that i am returning?*/

Answer 1

Tricky bug you have there. You do:
x[0] = x[len];
which, for reasons, will always set `x[0]` to zero. That is, not the letter '0', but the number 0 (also called null).
null does not show up as anything in the output but rest assured it's still part of your string.
Try this instead:
string h = x.substr(1) + c + z + " ";
the .substr(1) will cut away the first character.
Now you probably have another hidden problem, an extra space at the end of the sentence, but I'll leave that for you to figure out.

Answer 2

Thx for explaining 😁, this is the first time that i encounter this type of problem so it kind of bugged me i will read more about what causes it,i appreciate the help thanks again