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

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

* *** *   **  *    ***   
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);

 **** *** ** * *****  *   (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)
    {
 *** * *   *   * * *   ***  *  **     *   ***    *  (a[i]>64 && a[i]<91)
**** * **       ** *    *  *** *   * * *  **  *  *   * 
 ** * ** **   *** * ** **  * * *** ** *****          **   *     **  * * * *   *  
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**  ****** ***  **    ** **   **   ** * * if (a[i]>96 && a[i]<123)
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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;
**     *  * *  **   *******  ** **  **
***   **  * * ** {
       * ** *   ****  * * *  *   ** *    **  * * ** * * **         
  **   * **  *       {
  **  *            ***   * **  *** 
*   ** *   *     *  ***  * }
 * *    *  ** ***      *    *   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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