Function Sprintf

util/string/printf.cpp:20–27

}

TString Sprintf(const char* c, ...) {
    TString s;
    va_list params;
    va_start(params, c);
    vsprintf(s, c, params);
    va_end(params);
    return s;
}

int fcat(TString& s, const char* c, ...) {
    TStringOutput so(s);