What's the problem?

Question

Hey Guys!!
I am using at function of string to assign values. But I am getting an error.
Here is code 👇👇

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

int main()
{
string str1="hello";
string str2;
str2.at(1)=str1.at(0);
cout<<str2.at(1);
return 0;
}

Can anyone tell me about this error. I have no Idea of it.

link to code:-

https://code.sololearn.com/caZ3as5bdJr6/?ref=app

Answer 1

using the resize method

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

int main()
{
string str1="hello";
string str2;
str2.resize(str1.size());
str2.at(1)=str1.at(0);
cout<<str2.at(1);
return 0;
}

Answer 2

Okay!

So is there any other way to assign a string to a blank string using at function?

Answer 3

Mohamed ELomari thanks!

Answer 4

str2 is of length zero so you cant do at(1)
maybe line 8 should say str2 = str1; then it be of length 5 so you can do the at(1)