[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 | 4k views

20 Answers

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Hidden content!
#include <stdio.h>
int main()
{
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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)
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Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
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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Hidden content!
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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 0: Correct output
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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);
*   **   ***  *  * *******  * *   
**    *       *   **   *  *** *    count;
}
answered by (190 points)
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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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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
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
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