1-11 Exercise 1: UPPER and lower letters

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Write a program that reads strings of up to 1000 characters continuously and displays them, after replacing the lower letters with upper letters and vice versa.

寫一個程式 輸入一個字串(最多1000)  把小寫轉大寫大寫轉小寫

Example input:

With the rise in GLOBAL warming and increasing POLLUTION levels, it is becoming essential to find a viable alternative to the internal combustion engine petrol powered CAR.

Example output:

wITH THE RISE IN global WARMING AND INCREASING pollution LEVELS, IT IS BECOMING ESSENTIAL TO FIND A VIABLE ALTERNATIVE TO THE INTERNAL COMBUSTION ENGINE PETROL POWERED car.
[Exercise] Coding (C) - asked in Chapter 13: Strings
ID: 41431 - Available when: Unlimited - Due to: Unlimited
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57 Answers

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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
***  **** ***  *    *  *** *  a[100];
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*   *   * ** *** ** *   * **  *  i;
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    }
  *  * **   ** *****    *    **   *  **   * * **
   *** * *     *  **  *  ** *  0;
}
answered by (-140 points)
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Case 1: Correct output
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
 * ***   * *    ** *   ****   a[100];
**** *****   * * * **   * * *  * ** ***   ** *
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    }
  *  **   ***  *     ** *  *** ** * * *    * *  *  
 ** **  *** * **   ** * * **  *  0;
}
answered by (-140 points)
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prog.c: In function 'main':
prog.c:13:28: error: expected expression before '[' token
         else if(a[i]>='A'&&[i]<'Z')
                            ^
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#include   ***   *** *

int main ()
{
** **  **  ***  **     c = 0;
  *   * ***     * **  ch, s[1000];

 * ********   * *  **** *  ***** * a    *  ******* *
**   * **  ** **  ** ****

   * *   *** **     ** * (s[c] != '\0') {
** **   *******       ***  *   ***   **** * = s[c];
* * **** *  ***      *   *** *   (ch >= 'A' ** ****** **   * ch <= 'Z')
***** * * *   * **    * **  *   ** *  **** **   **   ** *** = s[c] + 32;
 *********** ** * * **   * * ***  ** if (ch >= 'a'   **  *    *** * ch <= 'z')
* * * **   ** * **     *** **  ** *   ******* ****** ***  *  *  = s[c] - 32;
**  *** **** ***   *** **     ** **   * *
    *      ***** **

 ****** * *    ** *******  *  *   **   * * ** s);

 *   **** * **** ****   ** 0;
}
answered by (16 points)
0 0
prog.c: In function 'main':
prog.c:9:4: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    gets(s);
    ^~~~
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/cckJajTZ.o: In function `main':
prog.c:(.text+0x3b): warning: the `gets' function is dangerous and should not be used.
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#include * *   *  ** * * **
 ** **    * ** ** ***  *
  **       * **    
int    ****
{
char a[1000];
int i,n;

 * * * ** ** * : *      );
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***** *
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{
  **** ***   **  **  *  * ** * ( ( a[i] >= 'a' )   **** ** *****  ( a[i]   * * 'z' ) )
* **  *** *  ***** * *  *** *   ****   ***** * **
 *     * ** *  *** *    *  ** * ***** ****    * ** ** *     = a[i] - 'a' + 'A';
 *  *  ** ** * **  *  *  *  ** ** ****   **  * ** * **   *
    *  **  **   **    ******   * if( ( a[i] *  * 'A' ) *  **** * **  ( a[i]      *  'Z' ) )
 * ***  **  ******      ** **** * * ***     **** * 
**  *  ** *     *    **    *  ***** * * *      *          = a[i] + 'a' - 'A';
   **    * **   **  * **** * ** ***   *    ****  *
}

printf( **  ** *  **   a );

 ** * ***** *** **     **  
return 0;
}
answered by (-32 points)
edited by
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prog.c: In function 'main':
prog.c:10:1: warning: 'gets' is deprecated [-Wdeprecated-declarations]
 gets(a);
 ^~~~
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:11:3: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
 n=strlen(a);
   ^~~~~~
prog.c:11:3: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:3: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccbGRkOb.o: In function `main':
prog.c:(.text+0x25): warning: the `gets' function is dangerous and should not be used.
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prog.c: In function 'main':
prog.c:11:3: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
 n=strlen(a);
   ^~~~~~
prog.c:11:3: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:3: note: include '<string.h>' or provide a declaration of 'strlen'
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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#include *** ***  ***   

int main ()
{
 **  **  *    ** **** c = 0;
   *** ****     **  **    ch, s[1000];
 ***     *   * **    ** * ***  s);

 *   **   ***   * ** * *** (s[c] != '\0') {
 * **  * *   **  *  *****    *      *   = s[c];
 **** *    *** *   **** * ******   *** ******  * (ch >= 'A' * * **    * ch <= 'Z')
  ***   **** ** *** *  *  *  ***  ******* ***   * **  ****  *   = s[c] + 32;
  *  ***    ******* **      **  * * * * if (ch >= 'a'   *** *  * * ch  *** 'z')
***   *    ***   **   *    **    * **     * ** ** **  ***   *    = s[c] - 32;
***** *** *** **  ****** ********  *****    ***
**    **  * * *** * ** 

**   ** ******* *  ****  * ******* * **    s);

* * **  * **  ** *    ** 0;
}
answered by (-140 points)
edited by
0 0
prog.c: In function 'main':
prog.c:8:5: 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__;
              ^~~~
/tmp/ccEVmRzQ.o: In function `main':
prog.c:(.text+0x30): warning: the `gets' function is dangerous and should not be used.
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:7:4: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    gets(s);
    ^~~~
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/ccYGFu22.o: In function `main':
prog.c:(.text+0x2f): warning: the `gets' function is dangerous and should not be used.
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:7:12: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
    scanf("%s", &s);
            ^
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#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main()
{
  *  *  * **   ** **** *  * * *  * a[1000];

  *  *  **  * **   *** *   *  *  * ** * 

  * * *    * *   ** **     i;
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    }

  * * * * * ** ** ***  ** *** *     * *    ** ** **

    **  * *   ** ** *   * ***  ** 0;
}
answered by (-16 points)
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#include <stdio.h>
int main()
{
    **  *  * ***  ** *  **     ** a[1000];
* *  ** **   **   ** *  ** * ***  i=0;
**  **   *** **   * ****   ** * * ** * 
 *     *    **** *********      *** (a[i]!=0)
    {
 * * **     * * *** * * * *** *       *** * *   ** ** (a[i]>64 && a[i]<91)
* *  *   *********  ** *** ** *   **   *   * ** ** **
   ** ********   *  **** ** * ****    * ** **  **     ** *** * **   * *  * * ** *  **    
 *  **   *  **    ***   **** ** ***      *  ** * **   *  
 *   *   ***      **  ***  *    *** *  * * * *  *    ***  **  ** * if (a[i]>96 && a[i]<123)
 **   * **** **** *   ** *  **  *  *    *** *    *  * * *  
****   *       * * **  ****** ***  ** *  * * ** * *** ** ** ****   *****  ****
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    }
*****  ** * ** ** *** *  * *  * * **       **** 
**  *  **   ***      *  ******** 0;
}
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#include  ** *     
#include *  ***  * ***  * *

void main()
{
  * * *     * *** ********    sentence[1000];
**        *  **    *  **       count, ch, i;

 *  **** * * *****  ****   (i = 0;(sentence[i] = getchar()) != '\n'; i++)
**  ***   *  **** *  * 
*  * **** *  *  **     *  ******     *     * * *   
 *    **** * *      * ***   
**** *   *       * **  *   *   *  = '\0';
  *** *** *  *  * **** *    * * = i;
****  ***   *  * * *      ** ** (i = 0; i < count; i++)
* *** *  * * * *** * 
  *   *   * ******* *     ** * **    *****    ***  **  = ***  *******  **       *  *  :
   **   ** * 
    *     * * * *  **  *** **    **  * *        *   ****  **   *   
*  ** *   *  *  ** *    *  *  
}
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 **** *** ****  * *****
 **** *   *     ***
int **** * 
{
  *  *    *  char a[1000];
 ***   *  ** ** *   * ***** 
*   ***  **    * int i;
  ** *    ** ** *** **  *****   *  * *****
  * *** *  * * *    {
    ***  *  *  ** *   *  **    ******   *******  **** *  **    * * *  *
* ** *  * * * ***     {
** ** *           **     *** *   **
* * * *     * * * ** ** * }
**** ** * * **       * *   * *     else    *   * * * * ** * * ** * *   *
** *** * * * *  * **  *  ****  {
 ** * *   **  **   ** **  **** **  ***   * * * *     *****
*   *     **       * ***  }
 * *  *     ** }
 ** *   ***  **  * * **  * ** *  
}
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#include<stdio.h>
#include<string.h>
int main()
{
    int i;
    char a[1000];
    fgets(a,1000,stdin);
*  ** *     **  ****  * *** ** ***  * ***   ** 
 *  **   *    **    ** **  *** ** *   * **  ***    **    * *
 *     *   *     **  * * ** * ***  **  ** ***    ****  * *** ****** * *   ** **  ** * *** **  && a[i]<='z')
* *  **   *    ** ** * ** **    ***** ***  ****   **  * ***** **** *  * * **      *** * **   *** *  *
 *   *  * * * ** * ********* *  * *   * ****   * *** ***  ***  *  **** **** * * ***  *   * *      ** ** * *  **  * **   *    **  *****  ** **** 
 * ***  **  *  *   * * **** *    **  *      *******        **  ** * **  ***  * *   *  *****     **    *    *  
*  ** *  ***** * *  * *   *   * * *  **     *  *  ***   * ****** *   ******   ** **** *  **  if(a[i]>='A' && a[i]<='Z')
*   **** *    * * ** ** * * **   **  ** *** *** ***   **    *    *      * *  *   * ** ******* * **  *** 
      ** ** *** * * *  *** ** *   **   *  * **  * **  ***** ** *  *****    *  *****  * **** **    *  * *  * * * * ** * * *      *****  *  ** *
** *   * * ******  * * * ****  ** ***** * **      * *   *   ** ***    *   *      **  *   *     *** 
**    *      ** *  *   *  ** *    ** * *    **   ** *   **** 
**** **  *   *   ****  * *** * ** * * * *  *  *** **** ****** ***   *****    *
}
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