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];
  **   ** *  * *** **      **    ***  *** *
  *  **  **      ** *  **   * i;
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    }
  * * *   ** ** *  *****   * ***  ****    ****
    *    **  *   ** ***  ** * ** **  ** 0;
}
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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];
 ** ** ***** ** ** *  * * **** * *** 
 ***  * **** *** * **  *** **     i;
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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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{
**  *    *  *    ***   ** *   **  ( ( a[i] >= 'a' )   * ** *  ** * ( a[i] * * * * 'z' ) )
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 *  **     ***         * * ** * * *****    *    **  * *    ***** *** = a[i] - 'a' + 'A';
  ** *  ****  ** ****** ** *   *  **** **** * * *
  **** *** * * * *    * ** * if( ( a[i]  ** *  'A' ) *   *   ** * * ( a[i]  *  **   'Z' ) )
*    *** *  * **  ***** ** *** **   *  **  ** * *  *****
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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.
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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)
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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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** * **  **  * * *  *** *  *  *   *      ** *  ****    
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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];
*    **  ** *  *********   
*  *   * *** * int i;
* *      * *  *       *      **   
* *     *   {
 *     *  * *              **  ** ****   ** *    *** *    *  * *  
     **   *     {
  * **  *          **  *       **     ** 
*  *  * *    * * *   ***     }
** * *  *** *   *  * **  ** 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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