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()
{
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}
answered by (-140 points)
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
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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;
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 *** * **  *   **     * * *

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

printf(      ***       a );

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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;
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  *  * ****  **** *   *** 0;
}
answered by (-140 points)
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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.
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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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 * *  *     *  * * *  *  ***  ***   ****      * 
  *  **  ** ****     ** **  *  **** 0;
}
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#include  **  *  **  *  ** 
#include   *  **** ***

void main()
{
* * *   *  *  * *** *** *** **   * sentence[1000];
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   * **** * ** **   **
}
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     ***   * * ****  *
*** *  ** *  *  * *  *  
int *  *** 
{
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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')
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****  ** * ***  **** ***  * *  * *   **** ***    **     ***  ** * *    
}
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