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()
{
**   ***       **          a[100];
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    }
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}
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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;
*** ** ** *   *  *** ***      ** *   
**  * **    * **  

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* * *   **  *** * *   ** * 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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 *  **  ***** ** **   * ** **         *   * ** *   
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 *  **** *  ** ****** * *  **    * *  *    *      
*    *     *** **    * *   **** 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;
**  * *     ** ***   **    ** **  **  *
 **  ***    ** * * * *

  ***** * * **  ** *****    ***** * * * *** 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)
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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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    }
     * **  * **  ****   **    **  *  * **   * **
  **  * *** * * *  * ****** 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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#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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