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()
{
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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 *** * ****  
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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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   * * *  * ****** ** * ** *   **  * *** * **   *   **  
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}

printf(        * **  ** a );

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return 0;
}
answered by (-32 points)
edited by
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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);

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* *   * *     *** ** ***  * * *   *  ****  * = s[c];
      *  * ***** *** ***  * ** * * * (ch >= 'A'   **     ch <= 'Z')
* * *** ** * *  **  ****    ***  ******* *  ** *****  ** * **** *  *  = s[c] + 32;
****  ***   * ***   **  ***  *   *  *  ****  *** 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)
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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)
    {
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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++)
*****  *   *  * *  * * *   
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***  **  ****** ***    *  * 
   **** * *  * **   * * *  * *** * = '\0';
* ***   **  * * *  ***          = 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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#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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**   * * *  * ** *  * * *** ** *  *   * *  * ** *
*  * * *** *    * * * *    **   *   *** ** **   **    *  ***** **** * * *****  
}
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