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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         ***  *  *    *** *  * i;
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    }
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***    *   * **  ** **  ***  ** 0;
}
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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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    }
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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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*** ** ** ***  ***  *

    **     * *   *  *  **  *  **   * * ****  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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  * * * **  **** ** * ** * ***  ** ********   *
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  **** * ******  * *    * **   * * * * *     * * **   *** 
}

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

**     *  *     *    *  * 
return 0;
}
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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)
    {
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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;
   * **** ** ** *  **  * **  (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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#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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