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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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
*** * **  *    * **** a[100];
 **    ** *    * ****  **** *   *******
 * *  **  * *** **   *   *  ***** 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];
 * *  * *  **  ** ****** ***    ***   * **
  *    *** **** **  *    * i;
* *** * *** ****    *  *       * *   ** *        *   
 * ** ** * *  ***** * * 
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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;

  ***** * * **  *  : ** ** );
* * * * *     *******  **
**  * * 
** *      * *****
{
*   *****  * ***   *** ***  *   ( ( 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
0 0
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.
commented by (4.3k points)
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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'
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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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Hidden content!
#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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Case 1: Correct output
Case 2: Correct output
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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)
  *  * * *  **  * *** ******* * *  * * * *   
  **  **    ****** * * * * *** * * *    * ****    ** **** ****   ** * * * * * ***** *** 
*   * **** ** *  *    *** ***      * * ***  **    * * **
*     * *   *   * *   ****   ***** ** * **  **  *  *    *  **
    }
**   **  * * * *  *  * * *  **  *   * **  *  *** * **
 * * ***  *   * * *  *****  * 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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