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2021-05-19 09:12:37
函数readDat()是从文件in71.dat中读取20行数据存放到字符串数组xx中(每行字符串长度均小于80)。请
函数readDat()是从文件in71.dat中读取20行数据存放到字符串数组xx中(每行字符串长度均小于80)。请编制函数jsSon(),其功能是:以行为单位对字符串按下面给定的条件进行排序,排序后的结果仍按行重新存入字符串数组xx中。最后调用函数 writeDat()把结果xx输出到文件out71.dat中。
条件:从字符串中间一分为二,左边部分按字符的ASCⅡ值降序排序,右边部分按字符的ASCⅡ值升序排序。如果原字符串长度为奇数,则最中间的字符不参加排序,字符仍放在原位置上。
例如: 位置 0 1 2 3 4 5 6 7 8
源字符串 a b c d h g f e
1 2 3 4 9 8 7 6 5
处理后的字符串 d c b a e f g h
4 3 2 1 9 5 6 7 8
注意:部分源程序已给出。
请勿改动主函数main()、读函数readDat()和写函数writeDat()的内容。
试题程序:
include<stdio. h>
inc lude< st ring. h>
inc lude<conio, h>
char xx[20] [80];
void jsSort()
{
}
void main ( )
{
readDat ();
jsSort ();
writeDat ( );
}
readDat ( )
{
FILE *in;
int i=0;
char *p;
in=fopen ( "in71.dat", "r");
while (i<20 && fgets(xx[i],80,in)!=NULL)
{
p=strchr (xx [i] , ' \n' );
if(p)
*p=0;
i++;
}
fclose (in);
}
writeDat ( )
{
FILE *out;
int i;
clrscr ( );
out=fopen ( "out71.dat", "w" );
for (i=0; i<20; i++)
{
printf("%s\n",xx[i]);
fprintf (out, "%s\n" ,xx[i] );
}
fclose (out);
}
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2020-12-12 01:37:21若需要把一个字符串赋给字符数组则选用的函数是( ) A. strlen B. strcmp C. strcat D. strcpy 2. 以下关于循环的描述中错误的是 A. 可以用for语句实现的循环一定可以用while语句实现. B. 可以用while语句实现的循环... -
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指针与数组习题
2021-05-22 03:18:36很有参考价值的一些...4,则错误的赋值是().A、p=a //p只能赋值以为数组,要想赋值正确,这里应该改为p=a[0];B、p=&a[2][1]C、q[i]=a[i]D、p=a[i]执行下列语句后的结果为().int x=3,y;int *px=&x;y=*px++;... -
c语言数组复习题分享
2021-05-25 02:30:19下面给出一些有关于c语言数组的部分的复习题,供大家参考~设已定义:floata[15]; 则数组a可引用的元素有().A) a[1]~a[15]B) a[0]~a[15]C) a[1]~a[14]D) a[0]~a[14]以下程序段给数组所有元素输入数据:main(){int a... -
在Java中所实现的多维数组,实际上是由一维数组构成的【 】。
2021-03-15 22:28:47()已知字符K的ASCII码是4BH,则ASCII码的二进制数1101000对应的字符应为()。根据综合工作质量量化考核计分标准,检测人员有以下()违规行为之一的,记3分S形构的优势描述不正确的是()。以下哪两项属于胰岛素类似物?... -
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【C/C++_选择题】(D07 1130)
2021-05-23 21:25:462、下列关于对象数组的描述中,( A ) 是错误的 A 对象数组只能赋初值而不能再赋值 B 对象数组的每个元素是同一个类的对象 C 对象数组的数组名是一个指针常量 D 对象数组的下标是从0开始的 3、设... -
在JAVA 中ArrayList 类实现了可变大小的...则下列语句中能够实现判断列表中是否存在字符串“小说”的是( )
2021-03-21 11:24:14在JAVA 中ArrayList 类实现了可变大小的数组,便于遍历元素和随机访问元素,已知获得了ArrayList 类的对象bookTypeList ,则下列语句中能够实现判断列表中是否存在字符串“小说”的是( )答:bookTypeList.contains(\... -
面试中常见的数据结构与算法题整理,想当架构师,数据结构与算法不过关可不行(数组+字符串)
2020-08-17 09:30:07数组(共30题,含答案) 1.矩阵中的行列数可以是不相等的,这样的说法正确吗?A A.正确 B.不正确 2.对矩阵压缩存储是为了(D) A.方便运算 B.方便存储 C.提高运算速度 D.减少存储空间 3.一维数组与线性表的区别是...