what is use of C_str() function in C/C++

c++ stdstring c-str
sachin picture sachin · Nov 8, 2011 · Viewed 11.1k times · Source

Can anybody tell me what is the use of c_str() function in C/C++?. In which case it is necessary to use it?.

Answer

AndersK picture AndersK · Nov 8, 2011

When you want to use your string with C-functions

string s = "hello";
printf( "your string:%s", s.c_str() );

Related questions

std::string formatting like sprintf

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

Read More
What's the best way to trim 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 wonder if there are some end-cases where …

Read More
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; How do I combine them to get a single string "John21"?

Read More