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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57 Answers

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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
**  *** **      *  *  * ** *** a[100];
 * *  * **      *  *** * * * ** * ** * **  *
*   *** * *  * * **   *******   i;
*** *  ** * **  ***  **  ** **       * * * 
    ****    ** *  *   **  *
*  ***  ** ******  * *  * * * *     *   **  *      * ***** **     * *  *   *  *   * ** *** ***    
 * ** * * ***  ****  * **   ****  * *     **** ****    *  **   **     ****  *   ***   *
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        *  ** ** *      **** ** *   ** * *  ** * *  **  *   *   *** * ** ** ********  ** **  * *

    }
**** *    * *   ** ** **   * * * * * * * * **
**  **  ****** ** **   * *    0;
}
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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];
*   *  * *** *  * ****** *** * **  **  
 *   * ** * ** *   * *  *** ***  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)
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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)
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)
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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;
** *   *   ***  * **   **** ***********  * **** * 
* *  *******  * *  *  ****  *
** ** ** ** * * **  *** * ****  *  * *  *** * **  ** *   ****   ****  *** *** * ****  **  
** *********  *   * *  *  * **  * * * *** *   *********  **  *  ** *****  * ***  *      * **** 


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


    }

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

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