// my linkedin : https://www.linkedin.com/in/vaalarivan-prasanna-3a07bb203/
vector<int> vec = {1, 2, 5, 6};
int ele = vec.back(); //ele = 6
//back() method does delete the last element from the vector, it just returns
//the last element.
// string::back
#include <iostream>
#include <string>
int main ()
{
std::string str ("hello world.");
str.back() = '!';
std::cout << str << '
';
return 0;
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