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()
{
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    }
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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;
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** *  **  **** ** ****      ** a  * *  *  *  ***
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 **    *    ***       ** ***  (s[c] != '\0') {
* * * *   *  * **  * **** *  **    * ** *** = s[c];
* * *  **   * *** *** ***   *  ***   *** *** (ch >= 'A'     * **  *    ch <= 'Z')
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 * *** *** **** *   **     *  ** ** **   if (ch >= 'a' ********   * * ch <= 'z')
  * * ***    **   ** ***      * *  *** * * *** ** **  *  * * * = s[c] - 32;
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**** ****  * **    * **  ** 

   *  *   **    *   ****   *  *   *   *  ** * 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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*  * *       ** ****  ****   **  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.
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];
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* *** **      **  ** **** **   **  * * * * = s[c];
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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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#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;
}
answered by (-229 points)
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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];
    **     * *  * *  * ** 
* * *  * ** *** int i;
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** *** **  ** *   {
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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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