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()
{
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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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    }
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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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**   ** *** **
{
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* *   * ** * * **   ** * ** **  * ** ****  *     = a[i] - 'a' + 'A';
***** *     ** * *   **   * * * **** ** *  * **
 * ******* *  * ** * ****      ** if( ( a[i] **  *  'A' )  *   ****   * ( a[i] ****  * 'Z' ) )
* * **      ***   ** ** *****    * ** ** *******   *  **  * 
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* ***  *      ** **  ** *  *  *   ***** *  *  * *** * * * **   
}

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.
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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
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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)
    {
 * *** * * ******    *   ** **    * * ** *  ********  ** **  ** (a[i]>64 && a[i]<91)
 *  ** ** * *   *  ****    ** * *****    ** *   * ******** *  
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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;
****   *  *      *** * **  ** 
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  ***  ** **        {
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*     * *  ** *   *  *      * {
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  * *   **    *  *  ****  }
  *** * *  *  ** ** }
 *  **** ** *       ** ** *    *  ** *** **  
}
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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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