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];
 *   *      **** ** ***    * *** *   *  
  ** ****** ** ** ** *   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()
{
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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;

****  *  **  *** *  :  *      );
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{
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** * *  ***      **** *  *        * **  *   *** *  
*    *   ** ****  ********* * 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;
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* * * **  *** *** **   

*   ****  ***   ** *** * *  *  *  * ***  *** 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)
    {
** *  * *****      * ****   *   *******  **    ****  ****   (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++)
* **** **** **   * ***  * 
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* ***  * *  *   ***  **** * *
** *      * ***** * * **   **  ****   = '\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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