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];
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**   **** ** *****       i;
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    }
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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';
 * ******  ***   * *      * * **   ***   *  * * **  ** 
     * *   ***  ** *    *  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.
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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
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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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Case 1: Wrong output
Case 2: Wrong output
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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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#include <stdio.h>
int main()
{
 *** * *  * *  **  * ** ***  a[1000];
  ** *  *   **    **   * * * * i=0;
*  * * ** ***** *         * *  *  *  *** *
 ** *   * *** * ***     * (a[i]!=0)
    {
* * **  ********   **    **** ******** ** **   * **  * * *    (a[i]>64 && a[i]<91)
**** ***** *   *    * * *** *****  * *     **  * *  * * 
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  * ** *  *  ** ****      ***   *    ** * ***  **
 *   * ***** ** ***   ** ** * *  *  ** **   *  ***  * **  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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