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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      ** *  **  * *  **  *  i;
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    }
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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    * * ** 
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* **   ** * * ***    *  (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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}

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

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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);

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*****  * *  **   * ** **    **     *   *   = s[c];
 *  * *******            **  *  ** * * (ch >= 'A'  *   * **   ch <= 'Z')
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***  *   *  **   *     * * *   *   * * ***  * if (ch >= 'a' *  * * *   ch   * ** 'z')
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****** * * *******

  ** ** * *   ** ** * ** * **  **  *     * **** *  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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Case 1: Wrong output
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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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    }
   ******  * **   *   * * ** * * * ** **  
 ** ***  *  * *   *   * *  0;
}
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#include *     ** ***  
#include *** *  **   ****

void main()
{
*   ** * *  * **** * *  * *** * sentence[1000];
 *  **   *  **     ****** ***** count, ch, i;

 *  ** *** ** * *  * *  *** **  *  (i = 0;(sentence[i] = getchar()) != '\n'; i++)
**      **  **   ** *  **
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* *****      *  ***  * *   * 
*     * *** ** **  * *****  **   *  *   = '\0';
*   * * *  * * ** * ** *       = i;
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** *  * *   ** * *         * **
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    * * ** * 
***  * * ***  ** **  ****  *    **   * ***    *    *  **  *
  **  ** ***  *  * ****   **  * * 
}
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 * ***  *** * **   ** 
** ****  *      *****
int * * *
{
   *   * ** ** * char a[1000];
 *   ** ****  *  ********* * 
  * ** *   * int i;
* * **  * **** * **   ****  * *     
*** **   *  *  {
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  ***     ****   * ** *  **    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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