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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    }
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}
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)
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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{
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*  *   * * *** ** ** ** * *  * **  * *  *     ** * * = a[i] - 'a' + 'A';
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***** *** *   *****  * *      *** *** **  * ** ***
*    *** * **   ** * ** **   * *  **          * **   = 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'
commented by (4.3k points)
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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];

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

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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++)
  **    * * ****  *  * *** *
**** * **  *  *   * *********    ** ****** *   ***  *  **
*      ******  ** *       
 *  * *** * * *** **  *   ** *** = '\0';
    *  * ** ***  * * **** ** = i;
*******  *** *        * * *  ** (i = 0; i < count; i++)
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* ***     ***
 * * *   *    ***  *****  * ***      ****  **** ***  *     ****  
  *  *  *  *  *** ******  ****
}
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 * *  *  * *   ** *  *
*   *   * * **     
int   **   
{
*   *  * *  ** char a[1000];
*  **** *   *    * *  *   
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**   *    **     {
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*    *   *  *   *** ** }
*     * **** ** ****   ******  else   *   *  ***  ********* *      * ** 
*****   *  *  ** ** **   *  * *  {
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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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