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];
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    }
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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()
{
***  **  *  ** * *** ***  *  **  a[100];
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    }
*** ******  ** *  **  *    *   ***  ** ** *
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}
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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{
*       *** ** * ***  * **  ( ( a[i] >= 'a' )       **     ( a[i]    **  'z' ) )
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    **  * **** * * *   **  **          * * *   * **     
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*  * ****           ***  ** ***  *******        **   **
}

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.
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'
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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
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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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*** **** * * *  **    * *  *     *  ** * ** *     * ** 
  *** * * *** *****  * * * *   ***  **** **** * *** **    * *  ***   **  ** **  *   *
*** **** ** **  * *  *    ** * **   *  * **  *  *
*  *  * ***** *       ** **    *****  *    *  *   **  *  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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