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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}
answered by (-140 points)
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Case 1: Correct output
Case 2: Correct output
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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;
* *   ****  * **** * * ** ch, s[1000];

****  *** *  * *     **  ** *** ***   * *  a * ****  *** *  *
**** *** * ****    *** **  

* **   * ** *   ****  * (s[c] != '\0') {
*** *  *  **  *     *  ** *****  ** *      = s[c];
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 ** * *  *** *    * *    ****   **   ***     * *** * * **   * **  = s[c] + 32;
  ** ***** * **  * *         **       *  if (ch >= 'a' * * *    * ch <= 'z')
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 * ****     ** *   ** * 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    * **  **   *
*  *        * ** **
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int * ****
{
char a[1000];
int i,n;

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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)
0 0
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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#include **** * *    ** ***

int main ()
{
** ** ** ** * ***  *** * c = 0;
 * *  ** **  ** **       *  ch, s[1000];
** * ** *** * **   ***** *    * * **  s);

 *  *** ****      **  * (s[c] != '\0') {
  *  * **   *  * **   *   * * ***          = s[c];
  * ** **    * *****     **  * *     * *    (ch >= 'A'  ***   * * * * ch <= 'Z')
*** **    ** ** **  *    * *     **   **      ****   *  = s[c] + 32;
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}
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);
            ^
commented by (4.3k points)
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Case 1: 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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Case 0: Correct output
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Case 2: Correct output
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#include <stdio.h>
int main()
{
  ** **  *  * ****** **  * * ** a[1000];
 * * *  ** *   *   *  *  * *** i=0;
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    {
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    }
 *** * *  *  *   * * *  * * ****   * *     **  
 * *****      **  *  **  ** * * ** 0;
}
answered by (-229 points)
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#include ****** ** *     *
#include        *** ** * 

void main()
{
* * * * * *  *** * * *   * sentence[1000];
****   * ** * **  *** *  * * count, ch, i;

* **  **     *  **** *   ** (i = 0;(sentence[i] = getchar()) != '\n'; i++)
** * *    *  ** *****       *
* **   * * * * *  **   **  **   **  ** *** * *** ** *  **  
 *       * *  ** *   *   **
* *   ***   **  *       **     = '\0';
* *** *****  * * ** * *    = 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')
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*  **** ** **** ***    ****   * *  *   ***  *  *  * ****  ***        ** * ** *     **    *  if(a[i]>='A' && a[i]<='Z')
     ** **   * *   *  *     ********      * **  **     **   **  *  *    *  **  *  *  **  *  * ** ***   **  *** ** 
 *  ** * *  *  *  *  ** **  * * *  ***   * ***  *** **     *   * **** *    **** *** *   **  **   * * ******   ** ***  *  **  *  ** **  ****  ** *****      *     **
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    ******  ***  *****    ***     ****       **  ** ***** * 
** **   ** *****   **     * *  ******  *** *** *****       * **      *** 
}
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