How to Concatenate C Strings on a Single Line?

Concatenating Multiple C Strings on a Single Line

In C , unlike in C#, there is no direct syntax to concatenate strings on a single line using the operator. This can result in code that appears冗长且不优美。

Solution: Using String Streams

To achieve similar functionality in C , you can utilize string streams. Here's an example:

#include <sstream>
#include <string>

std::stringstream ss;
ss << "Hello, world, " << myInt << niceToSeeYouString;
std::string s = ss.str();

By utilizing a string stream, you can append various data types to a single string on one line. The << operator can be repeatedly used to add additional data to the stream. The final string is then retrieved using the str() function.

Alternative Approaches

Other solutions include:

• String Concatenation Functions: Using functions like std::strcat() and std::strncat().
• Operator Overloading: Overloading the operator to support string concatenation.
• Template Metaprogramming: Using template metaprogramming techniques.

However, the string stream approach is generally considered to be the most convenient and efficient method.

Guru's Tip

Herb Sutter's Guru Of The Week article, "The String Formatters of Manor Farm," provides valuable insights into the different approaches to string formatting in C .

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