This question already has answers here: How to concatenate a std::string and an int (24 answers) Closed 5 years ago. int i = 4; string text = “Player “; cout << (text + i); I’d like it to print Player 4. The above is obviously wrong but it shows what I’m trying to do here. … Read more
Using C++11, Ubuntu 14.04, GCC default toolchain. This code fails: constexpr std::string constString = “constString”; error: the type ‘const string {aka const std::basic_string}’ of constexpr variable ‘constString’ is not literal… because… ‘std::basic_string’ has a non-trivial destructor Is it possible to use std::string in aconstexpr? (apparently not…) If so, how? Is there an alternative way to … Read more
I need to use an std::string to store data retrieved by fgets(). To do this I need to convert the char* return value from fgets() into an std::string to store in an array. How can this be done? 12 Answers 12
I have to format std::string with sprintf and send it into file stream. How can I do this? 42 s 42
What is the effective way to replace all occurrences of a character with another character in std::string? 17 s 17 std::string doesn’t contain such function but you could use stand-alone replace function from algorithm header. #include <algorithm> #include <string> void some_func() { std::string s = “example string”; std::replace( s.begin(), s.end(), ‘x’, ‘y’); // replace all … Read more
I thought this would be really simple, but it’s presenting some difficulties. If I have std::string name = “John”; int age = 21; How do I combine them to get a single string “John21”? 24 s 24 In alphabetical order: std::string name = “John”; int age = 21; std::string result; // 1. with Boost result … Read more
I’m currently using the following code to right-trim all the std::strings in my programs: std::string s; s.erase(s.find_last_not_of(” \n\r\t”)+1); It works fine, but I wonder if there are some end-cases where it might fail? Of course, answers with elegant alternatives and also left-trim solution are welcome. 48 s 48
