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How do you append an int to a string in C++? [duplicate]

This question already has answers here: How to concatenate a std::string and an int (24 answers) Closed 5 years ago. int i = ...

June 2, 2022
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Is it possible to use std::string in a constexpr?

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}’ ...

May 23, 2022
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convert a char* to std::string

I need to use an std::string to store data retrieved by fgets(). To do this I need to convert the char* return value ...

May 14, 2022
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std::string formatting like sprintf

I have to format std::string with sprintf and send it into file stream. How can I do this? 42 s 42

May 1, 2022
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How to replace all occurrences of a character in string?

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 ...

May 1, 2022
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How to concatenate a std::string and an int

I thought this would be really simple, but it’s presenting some difficulties. If I have std::string name = "John"; int age = 21; ...

April 25, 2022
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How to trim a std::string?

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 ...

April 17, 2022
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