使用scanf函数需要在头文件中添加___.
A: include
B: include
C: include
D: include
A: include
B: include
C: include
D: include
举一反三
- 使用库函数前包含头文件stdio。h的正确命令是（ ）。 A: @include<stdio.h> B: #include<stdio.h> C: #include stdio.h D: #include”stdio.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 "
- 使用scanf()函数时，在源程序开头必须写预处理命令（ ） A: include <stdio.h> B: include <stdio > C: include <stdio.h> D: include <scanf.h>
- 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"
- 使用scanf函数需要在头文件中添加___. A: B: include <stdio.h> C: D: include <ctype.h> E: F: include <float.h> G: include <iomanip.h>