[AD] 20171116 作業 2

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字串比大小

字串也是可以比大小的，通常都是透過ASCII碼來判斷字串的大小

請寫一個程式依照下列的規則判斷字串的大小

1. 不分大小寫 "a" 跟 "A" 一樣大

2. "a" > "b"

3. "a" > "aa"

輸入說明：

會輸入兩個字串，臉字串間用空白隔開

輸出說明：

請依照範例輸出兩字串的大小關係

輸入範例1：

book cook

輸出範例1：

book > cook

輸入範例2：

being be

being < be

輸入範例3：

include INclUdE

輸出範例3:

include == INclUdE
[Exercise] Coding (C) - asked in 2017-1 程式設計(一)AD by (18k points)
ID: 33758 - Available when: Unlimited - Due to: Unlimited | 6.2k views

20 Answers

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Hidden content!
#include <stdio.h>
int main()
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answered by (236 points)
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prog.c: In function 'main':
prog.c:11:12: warning: multi-character character constant [-Wmultichar]
         x+='a[i]';
            ^~~~~~
prog.c:15:12: warning: multi-character character constant [-Wmultichar]
         y+='b[j]';
            ^~~~~~
commented by (4.3k points)
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Case 0: Wrong output
Case 1: Wrong output
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commented by (4.3k points)
0 0
Case 0: Wrong output
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commented by (4.3k points)
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prog.c: In function 'main':
prog.c:11:12: warning: multi-character character constant [-Wmultichar]
         x+='a[i]';
            ^~~~~~
prog.c:15:12: warning: multi-character character constant [-Wmultichar]
         y+='b[j]';
            ^~~~~~
commented by (4.3k points)
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Hidden content!
#include <stdio.h>
int main()
{
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answered by (236 points)
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prog.c: In function 'main':
prog.c:7:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int *' [-Wformat=]
     scanf("%s %s",a,b);
             ^
prog.c:7:16: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'int *' [-Wformat=]
     scanf("%s %s",a,b);
                ^
prog.c:11:12: warning: multi-character character constant [-Wmultichar]
         x+='a[i]';
            ^~~~~~
prog.c:15:12: warning: multi-character character constant [-Wmultichar]
         y+='b[j]';
            ^~~~~~
prog.c:17:14: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int *' [-Wformat=]
     printf("%s %s",a,b);
              ^
prog.c:17:17: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'int *' [-Wformat=]
     printf("%s %s",a,b);
                 ^
commented by (4.3k points)
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Hidden content!
#include <stdio.h>
int main()
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answered by (236 points)
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prog.c: In function 'main':
prog.c:7:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int *' [-Wformat=]
     scanf("%s %s",a,b);
             ^
prog.c:7:16: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'int *' [-Wformat=]
     scanf("%s %s",a,b);
                ^
prog.c:11:12: warning: multi-character character constant [-Wmultichar]
         x+='a[i]';
            ^~~~~~
prog.c:15:12: warning: multi-character character constant [-Wmultichar]
         y+='b[j]';
            ^~~~~~
prog.c:17:14: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int *' [-Wformat=]
     printf("%s %s",a,b);
              ^
prog.c:17:17: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'int *' [-Wformat=]
     printf("%s %s",a,b);
                 ^
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answered by (215 points)
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prog.c:1:1: error: expected identifier or '(' before '.' token
 .
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/usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
collect2: error: ld returned 1 exit status
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prog.c: In function 'main':
prog.c:14:10: error: assignment to expression with array type
     tempb=tolower(b[i]);
          ^
commented by (4.3k points)
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commented by (4.3k points)
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Case 2: Correct output
commented by (4.3k points)
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Hidden content!
#include ** *   *  ****
#include  ** *  * ** ****  

int * **     char str[], const char key[]);

int main()
{
* **  ** ***  * **  *   *** str[1000], key[1000];
 * ***    *      ***** * * 
   *  **   * *   *  *   
** *  *     * **  * ** *** ** *    ***    *   *  * %d *****  * count(str, key));
* * ***    *  **** *   0;
}

int count(const char str[], const char key[])
{
**** *   **  **     **  *****  * ** **  ** * **** *
**  *  *  *** ** **  *** *  *  *    * * key);
 *  ** *   **   **   *** * *    *  *  
*   *  * ** ****    ******** ** 
** ****  ***   *  *** * * *       *** ***  * **** * ** *  **   
*** * *       *  ****  *****     *    *     ** ** ****
*  **    *  *   * *   * ** ** **  *   *   *** *   ***** * ** key);
   * ***  **  * * ** *  * **
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}
answered by (190 points)
0 0
prog.c: In function 'main':
prog.c:9:4: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    gets(str);
    ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:10:4: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    gets(key);
    ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/cc24SSNn.o: In function `main':
prog.c:(.text+0x25): warning: the `gets' function is dangerous and should not be used.
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Hidden content!
#include <stdio.h>
#include <string.h>
int main(){
 * ** *     ** *    **** *   s1[1000];
 *    *** *   ****  *** *  *   s2[1000];
  ********* *   * * ** *   *  s3[1000],s4[1000];
 **** *   **    *  ** ****** *  i;
***      ** *** ** *    ***  * ** * * s1,s2
*    * * *   ****** * **** * ** *   **     %s",s1,s2);
****  **** ** ** *   *   * *  * s1 to s3,s2 to s4
   * *  * **  ** * * *** ** 
** **** *** ***  * ** **    * *** ***  *
 * **     ** ** *        **** ** s1 to ALL uppercase
   *   *   **** *  **  * *    ** ******  
    *  * *    ****     ** **     *    ** *    ***    **  *  ** *** ***** ** *** ** ** *  ** * *
* ****** ****   **  *   *    **** *  **   *        ***     *** ***  ****    *      * *** ** **   ******   * *  
    }
****    *  ******  * * * * *** s2 to ALL lowercase
* **  ** * ***  ***** *   *** ** ***  *** *****   *
* ********** **    *   ***  * *  * *  *** **  *** **   ** * **  *     *  *  **  ***      *
  * ** *   ** * ***  *  *** * ****** * * **  ****  ** ***  *** * * ***   ** ** ** **  **     
 ****        ** **  **  *  ***  
***  ** *****  ** * **       s1,s2(be converted to all uppercase)
    **  * *  * *****  ** * ***** **  *  *
       **   * ** ** ********  **  **** * **** **    *  ** ***    *  *  * == %s",s3,s4);
*  ** ** *   ** *   *   *  ****  **
* * *    *** **  *   * ** *** if(strcmp(s1,s2)<0){
     *          *   **  *  * *  **    ** * * *** *  *******   *  > %s",s3,s4);
**  * *  * **     *   
* *****  * **    * if(strcmp(s1,s2)>0){
  *****  *  * ** ***   *** * **   *  **     *****   * *    *   ** * ** < %s",s3,s4);
* **    ***** * * * * *  *  
*   ** *** *   * ** ** *     ** 0;
}
answered by (212 points)
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Case 2: Correct output
commented by (4.3k points)
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Hidden content!
#include <stdio.h>
#include <string.h>
int main(){
**      ***   *  * *    *  s1[1000];
 *** * ***  ****  ** * * s2[1000];
**  ***  ** *** **** * **    s3[1000],s4[1000];
 ** *  **   ******* ** *   i;
*** *** * * ****    *    * **  s1,s2
    * **** **** *******  * ** ***  * **  * %s",s1,s2);
 *** *****   ***  ****  ***** * ** s1 to s3,s2 to s4
       ** * * ** **** **  *** *    * *
*  * * ** * *  ** * *  ***    **** * * **  * 
*   * ** * * *** * * * *      * s1 to ALL uppercase
** ****** * * ****  *  ***    **** **  
*  * * ***  * ****   **         * *     * * ** *  *  * **       *  * * *  * *  * *   **  * ***
 **   * ** *   *  **** *  *    *** *  * * * *     **   * *  ***   *** ***    *****  ***   * ****
    }
*  ** ***   * *  **** **   **   * s2 to ALL lowercase
  ** **** ** * ***  ***  ****  **   **  ***  *  *
 *  * * *** **   *  ** *  ** *    **  ** * * * **    ** * **   **** * **  *   ***   ***  **
      ***   *    *    * *  *   ***   *  *     **   ****   ***  * ** ** * *  **  * *  * 
   ** * *   ***     * ** ***  * 
  *       ***** ** *** *   ** *   s1,s2(be converted to all uppercase)
*   *            *   * * *  * *** ** * *****
  *   *  *  **   ** *** *    ** *    *  ** ****   **** ***       *  * == %s",s3,s4);
  **  ***    * * *       * ** * 
** **    ***** ***  *****  **  if(strcmp(s1,s2)<0){
***     ***** * **  **  * ***      *  **   *   ** *  **  ** ** **     > %s",s3,s4);
  *    * **  * ****     *****
    ****  ***  * ***   *** * if(strcmp(s1,s2)>0){
*  *    **    *   *  ** *  ***      *  *  *  * ******* **  *  < %s",s3,s4);
* *  *  ***** **      * * * **
* *** * *** * *    ***** *   0;
}
answered by (194 points)
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Case 0: Correct output
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commented by (4.3k points)
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