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];
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** ***   *** *  ** * * *** i;
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    }
* *    ****** ***   **  *  *** **  *  * * *  **
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}
answered by (-140 points)
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Case 0: Correct output
Case 1: Correct output
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
**  **** **  **   *   ****  ** a[100];
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**  ** * ***   *  **   **  i;
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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;
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*     *   ****  *   * *    ***    ***  **  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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{
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   * **  *    ***   *  *** * * * * * *** **** *   
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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];
  ***** ** * *  **    **  *  ***  ****    s);

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

 *** * *   ***    ***    *** *  **  ***

        * *     *** * * *   **   i;
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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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    }
* * * **  **** *  * **     *  *****   ** ** * 
   ***  *  ** *****       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;
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 ** * * ****   ** *  * * **   *  * * **  **** * **    *   ****
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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')
  * *     **  * **** ** * ***  ***  ****  *      ****** *** ****  ** **    *  *  *******  * **        * ******  ** * 
 *  *  *              ***  * **   *   *   ***  *   *  **  *   *   ***  ***** * **  *****  * **  *  **  *** **  ** *** **     * * *   *  ** * * **
*   ***  *   *** ****  *  *    * **    *  ****  *    *  *   ***  * * *** * * **  ** * *    ** ** * ****  
***   ** ***       ***  * * *   **   *  * *  *****  **  * ***   *    *   *** * *    ** if(a[i]>='A' && a[i]<='Z')
    ***  *  * ****  * **** *      * * ** *    ** ** *     ***    ** ***   *** ******* ** * *** * **  ***    ***
 *   *  *** *    *   ** ** * *   ** *  **** *** **    *   * **  *   ***  *  **   *  ** *      *   **** **       **  * * *    * ***     **  * * *    ***  
* ** * * ******   **  **  ** ***   ** *      * * * *    *  ** * **   * * *  * * * ***   ***  ***  * 
 * * ***  ** *  **      ** **  *     **      * ** * 
***  ****  **   * ** * *    *** *** ***** **** ****  **    * *  ****  *
}
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