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()
{
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* * *  * *   *** * **   *  * **    *   **
* ***  *  *  **  * ***   **  i;
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    }
**   **** *  *     * *   **    *  **  *  **   * 
** *** *   **  ******  * * * **     0;
}
answered by (-140 points)
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Case 0: Correct output
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
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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.
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'
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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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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*****   * *            **  *** **  * *  ***  **  *    * *   * ** *  * *  *   *** * ** 


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


    }

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

  ** *  *** * ******* *   ** * ** **  0;
}
answered by (-16 points)
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Case 1: 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;
}
answered by (-229 points)
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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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