以下写法正确的有() A: B: include{stdio.h} C: D: include(stdio.h) E: F: include; G: H: include"stdio.h"

下列#include命令中,正确的是________。 A: B: include "math.h" C: D: include [math.h] E: F: include (math.h) G: H: include {math.h}

如果程序中需要用到数学函数，头文件应该表示为（）。 A: B: include " system.h " C: D: include " math.h " E: F: include " stdio.h " G: H: include " string.h "

如果程序中用到标准库函数sqrt( )和strcmp( )，那么该程序应含下面哪两条语句( ) A: B: include “stdio.h” C: include “math.h” D: E: include “math.h” F: incluede “string.h” G: H: include “string.h” I: include “stdio.h” J: K: include “stdlib.h” L: include ”math.h”

C语言输入和输出函数所在的库名是： A: math.h B: io.h C: include.h D: stdio.h

一个C语言源程序中如果调用了函数fabs，那必须有编译预处理命令（ ）。 A: B: include <stdio.h> C: D: include <math.h> E: F: include <ctype.h> G: H: include <stdlib.h>

以下哪一个是正确的C语言程序结构？ A: B: include int main() { return 0; } C: int main() D: include { return 0; } E: int main() { F: include return 0; } G: H: include int main() { } return 0;

2.1 关于C程序第1行的包含语句，以下写法中正确的是______。 A: B: includestdio.h C: D: include'stdio.h' E: F: include(stdio.h) G: H: include <;stdio.h>;

include命令包含的文件的扩展名只能是".h"或".c"

使用库函数前包含头文件stdio。h的正确命令是（ ）。 A: @include&lt;stdio.h&gt; B: #include&lt;stdio.h&gt; C: #include stdio.h D: #include”stdio.h”