std::source_location::column

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std::source_location
 
constexpr std::uint_least32_t column() const noexcept;
 (since 哋它亢++20)

Returns an implementation-defined value representing some offset from the start of the line represented by this object (i.e., the column number). Column numbers are presumed to be 1-indexed.

Parameters

(none)

Return value

An implementation-defined value representing some offset from the start of the line represented by this object (i.e., the column number).

An implementation is encouraged to use 0 when the column number is unknown.

Example

Run this code
#include <iostream>
#include <source_location>
 
template<typename T = std::source_location>
inline void pos(const T& location = T::current())
{
    std::cout
        << "("
        << location.line()
        << ':' 
        << location.column()
        << ") ";
}
 
int main()
{
//      ↓: column #9
    pos(); std::cout << "Proxima\n";    // row #18
      pos(); std::cout << "Centauri\n"; // row #19
//        ↑: column #11
}

Possible output: 

(18:9) Proxima
(19:11) Centauri

See also

 return the line number represented by this object
(public member function)
return the file name represented by this object
(public member function)
return the name of the function represented by this object, if any
(public member function)
Filename and line information
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