[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 | 6.3k views

20 Answers

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#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)
0 0
Case 0: Wrong output
Case 1: 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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answered by (100 points)
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answered by (100 points)
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commented by (4.3k points)
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answered by (114 points)
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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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Case 0: Wrong output
Case 1: Wrong output
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commented by (4.3k points)
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Case 0: Correct output
Case 1: Correct output
Case 2: 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)
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 1: Correct output
Case 2: Correct output
commented by (4.3k points)
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