std::string remove last

To remove the last character from a std::string in C++, you can use the erase method. First, you need to determine the index of the last character in the string. This can be done by using the size method of the string and subtracting 1 from it. Once you have the index of the last character, you can use the erase method to remove it. The erase method takes the index of the first character to be erased and the number of characters to be removed. In this case, you would provide the index of the last character and specify that only one character should be removed. After calling the erase method, the std::string will no longer contain the last character.