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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#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;
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       ***   * ** ***  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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*****     *    ***  ** ** ****** *** *  * **  
}

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);

*****      * **** *  **    (s[c] != '\0') {
* ****          *  ****** *  * * ** = 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)
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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Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main()
{
****** ***** ***  * *   ** *  a[1000];

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    }

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* *    **** ** ******   *  *  0;
}
answered by (-16 points)
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Case 2: Correct output
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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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    }
** ***   ** *  * ** ** **   * *****   *****    
* **  ****       ** * ***  *  * **  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;
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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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