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];
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  * ***    *  * **** *  ** * 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)
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.
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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
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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];

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

  *   ** *  ***  * * ****  *   i;
* * **   *  *  *  *  * **  **   * * 
 **   *  *  **** *****  * 
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* ****   *  ***     **      * **  *** ****    ** *    *  **  *  **   * *  *       ******* 


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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)
  * *  * ** **  ****  ***   **  ****  ** * *** * ****
*     *     **** **********   *  * **     **   **   ** * **    * *** * ** *   *    * ****   
 ** * ***** **  **   * * *  *  **  *   * * ** *  **  *  
     *     ***     *  ** *** ***  *  *    **   *  ***** ***  * 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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