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

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

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return 0;
}
answered by (-32 points)
edited by
0 0
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
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++)
** * *  ****   **** *** * ***
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 ***  ****** * ** ******* 
  ****  * ** ** * *    ***  = '\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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#include<stdio.h>
#include<string.h>
int main()
{
    int i;
    char a[1000];
    fgets(a,1000,stdin);
      *** *      *  ****  ** * * **   * *   *   * * * 
* *  * * *   *  * **   * **       ****  ******  *  *
  *    * **  * * * * * *   *  * ** *    *  ** **    ******   * * *  **** * ** *  * * ***     *  && a[i]<='z')
 * *** ** *  **          **** *     **  ** ***   ***  ******* *  *** **   ******* **  ** *   * **  ** *    * **  
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* * * * * *  ***   **  *** *** * **   * *  ** *   *    * *** * ***  *      *   *  if(a[i]>='A' && a[i]<='Z')
 ***     * ***** * **  * ***  ** **   * ** *   * **  **    * **** * ** *******  *   *   * *  ** *  ***** 
 * ******   ****** ********* *   **     *  *** * ** * *** **  * * *  ***** *** ***     ***    ** * *** **** *** **  **     ***  ** **  * *  **
 ** *** *** ** * ***** **  * * * **** ** * *     **  **  * *   ****    ** *  *   **  ** *  ** * * * * ***   * **  
**** **   **    **** ***  **** ******** *     *  ***   *  * 
 *** ** * ** *** ** ** ** * ***  ****** **** ** * ** *****   ****   ***   **
}
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