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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**** *** ** ***** *    *   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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}
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 ()
{
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* ***     ** ****  * *  ch, s[1000];

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

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return 0;
}
answered by (-32 points)
edited by
0 0
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'
commented by (4.3k points)
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Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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Hidden content!
#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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Case 0: Wrong output
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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;
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* ******** *    * *** *   **  *  *  (a[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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*   * ****    *   ****** ** ***    *    *  *   
****   ***** * *   * **  *** ** *  ***  *** * *    *  * **  * **  ** *  * *****
}
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