我是C ++的完全初学者。我正在使用带有fltk 1.3.x的microsoft visual studio 2015，并遵循＆＃34;编程原则和实践使用C ++＆＃34;作者：Bjarne Stroustrup。我正在研究的当前计划是Hello World，第52-54页的练习。
我编写的代码（/从本书和std_lib_facilities.h [www.stroustrup.com/Programming/include-std_lib_facilities.doc]的支持文档中复制的代码）是：
//My first hello world program
#include "../../../std_lib_facilities.h"
int main() //C++ programs start by executing the function main
{
cout << "Hello, World!/n"; //output "Hello, world!"
keep_window_open(); //wait for a character to be entered
return 0;
}
然后我去Build - ＆gt;编译并发生这种情况......
Severity Code Description Project File Line
Error (active) the global scope has no "acosf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 670
Error (active) the global scope has no "asinf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 670
Error (active) the global scope has no "atanf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 671
Error (active) the global scope has no "atan2f" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 671
Error (active) the global scope has no "ceilf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 671
Error (active) the global scope has no "cosf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 672
Error (active) the global scope has no "coshf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 672
Error (active) the global scope has no "expf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 672
Error (active) the global scope has no "fabsf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 673
Error (active) the global scope has no "floorf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 673
Error (active) the global scope has no "fmodf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 673
Error (active) the global scope has no "frexpf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 674
Error (active) the global scope has no "ldexpf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 674
Error (active) the global scope has no "logf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 674
Error (active) the global scope has no "log10f" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 675
Error (active) the global scope has no "modff" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 675
Error (active) the global scope has no "powf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 675
Error (active) the global scope has no "sinf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 676
Error (active) the global scope has no "sinhf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 676
Error (active) the global scope has no "sqrtf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 676
Error (active) the global scope has no "tanf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 677
Error (active) the global scope has no "tanhf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 677
Error (active) the global scope has no "acosl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 679
Error (active) the global scope has no "asinl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 679
Error (active) the global scope has no "atanl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 680
Error (active) the global scope has no "atan2l" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 680
Error (active) the global scope has no "ceill" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 680
Error (active) the global scope has no "cosl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 681
Error (active) the global scope has no "coshl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 681
Error (active) the global scope has no "expl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 681
Error (active) the global scope has no "fabsl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 682
Error (active) the global scope has no "floorl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 682
Error (active) the global scope has no "fmodl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 682
Error (active) the global scope has no "frexpl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 683
Error (active) the global scope has no "ldexpl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 683
Error (active) the global scope has no "logl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 683
Error (active) the global scope has no "log10l" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 684
Error (active) the global scope has no "modfl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 684
Error (active) the global scope has no "powl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 684
Error (active) the global scope has no "sinl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 685
Error (active) the global scope has no "sinhl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 685
Error (active) the global scope has no "sqrtl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 685
Error (active) the global scope has no "tanl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 686
Error (active) the global scope has no "tanhl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 686
Error (active) the global scope has no "float_t" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 688
Error (active) the global scope has no "double_t" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 688
Error (active) the global scope has no "nan" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 700
Error (active) the global scope has no "acoshf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 704
Error (active) the global scope has no "asinhf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 704
Error (active) the global scope has no "atanhf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 704
Error (active) the global scope has no "cbrtf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 705
Error (active) the global scope has no "erff" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 705
Error (active) the global scope has no "erfcf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 705
Error (active) the global scope has no "expm1f" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 706
Error (active) the global scope has no "exp2f" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 706
Error (active) the global scope has no "hypotf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 707
Error (active) the global scope has no "ilogbf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 707
Error (active) the global scope has no "lgammaf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 707
Error (active) the global scope has no "log1pf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 708
Error (active) the global scope has no "log2f" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 708
Error (active) the global scope has no "logbf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 708
Error (active) the global scope has no "llrintf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 709
Error (active) the global scope has no "lrintf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 709
Error (active) the global scope has no "nearbyintf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 709
Error (active) the global scope has no "rintf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 710
Error (active) the global scope has no "llroundf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 710
Error (active) the global scope has no "lroundf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 710
Error (active) the global scope has no "fdimf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 711
Error (active) the global scope has no "fmaf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 711
Error (active) the global scope has no "fmaxf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 711
Error (active) the global scope has no "fminf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 711
Error (active) the global scope has no "roundf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 712
Error (active) the global scope has no "truncf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 712
Error (active) the global scope has no "remainderf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 713
Error (active) the global scope has no "remquof" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 713
Error (active) the global scope has no "copysignf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 714
Error (active) the global scope has no "nanf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 714
Error (active) the global scope has no "nextafterf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 715
Error (active) the global scope has no "scalbnf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 715
Error (active) the global scope has no "scalblnf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 715
Error (active) the global scope has no "nexttowardf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 716
Error (active) the global scope has no "tgammaf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 716
Error (active) the global scope has no "acoshl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 718
Error (active) the global scope has no "asinhl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 718
Error (active) the global scope has no "atanhl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 718
Error (active) the global scope has no "cbrtl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 719
Error (active) the global scope has no "erfl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 719
Error (active) the global scope has no "erfcl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 719
Error (active) the global scope has no "expm1l" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 720
Error (active) the global scope has no "exp2l" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 720
Error (active) the global scope has no "hypotl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 721
Error (active) the global scope has no "ilogbl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 721
Error (active) the global scope has no "lgammal" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 721
Error (active) the global scope has no "log1pl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 722
Error (active) the global scope has no "log2l" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 722
Error (active) the global scope has no "logbl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 722
Error (active) the global scope has no "llrintl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 723
Error (active) the global scope has no "lrintl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 723
Error (active) the global scope has no "nearbyintl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 723
Error (active) the global scope has no "rintl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 724
Error (active) the global scope has no "llroundl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 724
Error (active) the global scope has no "lroundl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 724
Error (active) the global scope has no "fdiml" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 725
Error (active) the global scope has no "fmal" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 725
Error (active) the global scope has no "fmaxl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 725
Error (active) the global scope has no "fminl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 725
Error (active) the global scope has no "roundl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 726
Error (active) the global scope has no "truncl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 726
Error (active) the global scope has no "remainderl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 727
Error (active) the global scope has no "remquol" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 727
Error (active) the global scope has no "copysignl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 728
Error (active) the global scope has no "nanl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 728
Error (active) the global scope has no "nextafterl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 729
Error (active) the global scope has no "scalbnl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 729
Error (active) the global scope has no "scalblnl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 729
Error (active) the global scope has no "nexttowardl" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 730
Error (active) the global scope has no "tgammal" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 730
Error (active) the global scope has no "fpclassify" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 732
Error (active) the global scope has no "signbit" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 732
Error (active) the global scope has no "isfinite" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 733
Error (active) the global scope has no "isinf" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 733
Error (active) the global scope has no "isnan" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 734
Error (active) the global scope has no "isnormal" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 734
Error (active) the global scope has no "isgreater" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 735
Error (active) the global scope has no "isgreaterequal" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 735
Error (active) the global scope has no "isless" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 736
Error (active) the global scope has no "islessequal" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 736
Error (active) the global scope has no "islessgreater" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 737
Error (active) the global scope has no "isunordered" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\cmath 737
Error (active) cannot open source file "/usr/include/math.h" Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\math.h 22
Error C1083 Cannot open include file: '/usr/include/math.h': No such file or directory Hello_World c:\program files (x86)\microsoft visual studio 14.0\vc\include\math.h 22
Error (active) linkage specification is incompatible with previous "copysign" (declared at line 53 of "c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\math.h") Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\xtgmath.h 183
Error (active) linkage specification is incompatible with previous "rint" (declared at line 52 of "c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\math.h") Hello_World c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\xtgmath.h 207
我认为这与std_lib_facilities.h文件有关。这本书推荐使用fltk 1.1.x和visual studio 2005，所以也许这也是问题的一部分？
非常感谢您给予的任何见解。
谢谢。
答案 0 :(得分：0)
应该起作用
#include <iostream>
int main()
{
std::cout << "Hello, World!" << std::endl; //endl = /n
system("pause") //system pause = wait till user entering a char
return 0;
}
答案 1 :(得分：-4)
我也很新，但是我是如何使用visual studio做的：
// my first program in c++
#include <iostream>
using namespace std;
int main()
{
cout <<"Hello World! I am a c++ program.";
return 0;
}
基本上你只需要使用#include＆lt; iostream＆gt; 这将告诉计算机使用这些功能来执行程序（取出空格）。 您还需要包括：using namespace std;如果你想说＆＃34; cout＆＃34;。否则你必须在cout之前指定并说明std。 最后你可以拿出＆＃34;保持窗口打开的东西＆＃34;。只要您单击CTRL-F5运行程序，就不需要它。 希望有帮助！ 古德勒克！