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

     **** ***  **** **     * **** **    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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 *  **** * **** *** ** * ** **** **   ** * **  * * *
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 ******** ** *     ***   *  *   *** * *    *   *  * *  **
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*     *    ** * **    ****** **  *** *         ***  *
}

printf( *** *  **        * a );

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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.
commented by (4.3k points)
0 0
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'
commented by (4.3k points)
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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')
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* *** * ** ** ** ** * ***

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**     * *** *   ***      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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Case 1: Wrong output
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Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<string.h>

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

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

   *  * * * *   *** * **  i;
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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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****  **** ***     **  * ** ****         *** *   *  *  **
***   *** *** * ** ** **  ** ** * *****   ****  ** if (a[i]>96 && a[i]<123)
  **  ** * * *** ******* * *** *     *  *  **     **    *
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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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