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

    }
 * * * **  *  * *** * * * * ***       *   *  *  **
* ** **  *  ****** *  * ***  * ** 0;
}
answered by (-140 points)
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Case 0: Correct output
Case 1: Correct output
Case 2: 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)
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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.
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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 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)
 **     * ** *    *  **** *  ***  ** *   **  * *** **
* *       *   **** *  * ** * *   *  * ***** ** ***  *   ** **    *       **
 * *   ** ***  * **** * * * * * ** ***    **  *** 
     ***  ***  * *   *  ** **  * * ********  * *  *****  *
    }
 **** *  **** *  *  * *  ******  *  * ****  *    **
  * ***   *  ** ** **  *  **  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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