Hey ! Again don't know where the error is. HELP !!

Question

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

int main() {

string str , z;
cin >> str ;

int len =str.length();

for(int i= len ; i>=0 ; i--)
z =z+str[i];

cout<<z;

return 0;
}

Answer 1

Strings are zero-indexed, accessing the character at position str.length() is undefined behaviour. The last valid character is at position str.length() - 1, so that is where you need to start iterating.
By the way, the <string.h> header is the old C header file for string functions. C++ uses <string> for std::string.

Answer 2

Works fine for me but since you haven't mentioned the actual error i am assuming you want to input multiple words but it only works for first word and so in order to get multiple words you will need to use getline function instead of cin.

getline(cin,str);

Answer 3

Try it now, it should work.
There was some kind of glitch in SoloLearn.

Answer 4

Thanks... It helps 😊