putf implementation

putf.cpp

#include <stdarg.h>

// simple implementation of the proposed std::putf
// int i = 3;
// auto d = 3.1415926;
// cout << putf("%03di -> %.3f", i, d) << endl;

std::string putf(const char* format, ...)
{
    va_list args;
    va_start(args, format);
    
    char str[4096];
    vsprintf_s(str, 4096, format, args);
    va_end(args);
    return std::string(str);
}