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
Case 2: 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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   ** * *  *
** ****  *      *
{
* * *    * ** ** *** ***  *  ( ( 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 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)
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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;
}
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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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***  ***   * *    * *** **  **        *  *********  ** *
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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;
 ****   ****   * * **** * * ** * 
 **     *    {
**** ** * * **  * ***   ***    *  * * * ** *  **** * *     *** ****   
  *   * * *     {
*** *           ***  **    ****   
* * **       **  ** *    * }
 *   **  **  * *    *  **  *  * 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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