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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}
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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)
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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)
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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'
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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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  *       *****  * ***  *  *****  * ** * ***   ** *  ** ***   ***  *   * ******  *  


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    }

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

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