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()
{
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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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    }
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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)
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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}

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.
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')
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** *  * *  ** * ***    

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 *****  *   **   **   *** * 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;
*  * ** **  **  **  * *   **  ** ** **
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    {
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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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 *** ***    {
*  * *****    ***   **    *** * *** ***** * ***  *****  *  ****
*   ***   * *     {
* *  *            *     ***  ** * **** 
***   *     * *** ** *    ***  }
* **     * *  *   ***  * *   * else ****   *****   *    ** ***   * 
*  * ***    **    ***** *     *  * {
*******  *  *   *  *   ** *  * * * **   * ****  **   ** ** ****
*******  * *  *  *   * * * * *  }
    ** * *    }
 *  ***  *  *   ** *   *    ** *   * **
}
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#include<stdio.h>
#include<string.h>
int main()
{
    int i;
    char a[1000];
    fgets(a,1000,stdin);
***       *       * * **   *** * ** ** **  * **
 *  **** **   **  *     *    ** **  *   **    *  ******* **
  **  * ******  ******* * *   **  **   *  *      *      *   * *** *** ** * * **** ** * *   && a[i]<='z')
*       * *       * ** * ******* ** **  *  ** *  ** ** ***   *  * * ** *         *** *  * *  *  *** * * **  * 
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*     ******  **** * *         *   **  **   **       **  **   ******    **  * * *   * ** **   **  *  
  *  *  * *  ** *  * *   *****   *** *   * * ******* * * ** ****    * ***  ** if(a[i]>='A' && a[i]<='Z')
**    *  *  * * * *  ***   * *    **  ***** *   * ** ***** *  * ** ***      **** * * * *** * *  *  *  * 
   *  **  *** ***** * * ** **   **  **   * ***      **** * * * * *     ** ****  ****  *** ** ** ***** **  *** * *     ** * ** ***  **  ** *  *  **      *
     *   *  * **  *    * * ** *** * ** * *** *   **  **  **** * *   * ********** ****** ** ******   ****  
 * *  ** *     *         ** *****   ** *     * *    ***** 
 **    **  *   ******  ********* ** *** *     ** ** *** * *****   * 
}
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