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;
  *** *   ******     * ch, s[1000];

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

** *    ** *    ****** (s[c] != '\0') {
* * *** *** * * * * **   *   *   * **     = s[c];
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}
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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*** ***  *** *     *   ** * **   * * *******  * * *  
}

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'
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);

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*  ** * * *  * ** ***  * ** ** ***   = 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)
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()
{
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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)
    {
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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;
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* ** *  * **** *
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  ** * * **  **   *** ***
}
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***   * *  ** ** 
 * *  *        ***     * 
int   ****** 
{
 * *  * * *     ** char a[1000];
**  **  ** ***   ***  ** * ***** 
 **  **   * int i;
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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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 **      ***  **    * **  * *  *  **      *    *  *  * *  *   ***  *  * *   * * *   *** *   *  * *   *  * *   *** *** 
  *****   **  ******* ** ***   * *    ** ** *   * * 
*** **  *** ** * *  *    *** * * *   * * * * ** ***   * * ** *** *     *
}
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