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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    }
  **  ******** ***** * ** **  **** * * * **  * *   
 *********** *  **     ** ****   0;
}
answered by (-140 points)
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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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    }
** ** *   * *    *       *********  ***   **   *  *  *
 ***  ** **** * **   **   *  * * 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)
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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;
***** *  *  *  **   * ***    * * ** *  ** *  *
 * * * * *****  ** *  *

***  *   *  ***   *** * *   * *      *  *  ** 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];

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

  * *   *   ******  **** **  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)
    {
*  *   * * *  * ****   ** *  ***   *   **     ****   (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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* **  *   ***
*   *     ***  * *** ** * *   ***   *  *    * *****  * *  ** *** * 
  **   *  *    *  *** *
}
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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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