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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    }
*  *     * **  ** *    * *** **   **** **  **
 ****   ***** ** **** *** ** * 0;
}
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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;

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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)
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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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#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main()
{
*  **  ***  * ***    * *****  **  a[1000];

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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)
    {
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 *  *   ***  ***** ****  * ***     *  * ** *** * * *   
***  ** *  * ** **** ** **  ** ***  ***   *         ** *   * ** * ***    *** * *  **  
 *      *    *  ** ***  ** *  *      * *   ****  * *   ** **
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*    *****  *  **    ****    **** * ** *  * 
**  ******* * *      ** ***  ****** *** * *****  * ******
    }
 **      *  **     ***  *  ** ** ***   **  **     ***
*       ** **   * * * ***   * **** 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;
***** **  ** *      * * * ** ** * ***  
***       * **  {
 ***  ***  *     **  * *    *  * *  ****  * *   ***     ***   *
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** ** *          *** * **  *** * ** 
  **        *     * }
 *  *   *******     * ** *  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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