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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    }
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}
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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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    }
  ** *  ***  ***   *  *  * **  *     *   *  ** 
     *  **    ***  ****** *       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;
 ****     ***     *** *** *   *   ** ** ** *
  * *   ** *  * 

 **    * ***   ****   ** *  ********** *** ** * 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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* **   *** * *** *    * *** *** ***    **  *     *  *   
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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.
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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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    }

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

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