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

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{
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*    **   *  * ** **  *  *   *** * *       ** * 
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***** **  *   **    ***   *****  *** *    ** * * ***  **   * * 
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}

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

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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.
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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 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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***  * ** *   *   ****

 **  * * * *   **  ** *** * ** *** *****    * s);

*  * **** ** *  **** 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.
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;
}
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#include <stdio.h>
int main()
{
 * *** * * ****  *   * * **   a[1000];
***     *  **** * ***    * ***  i=0;
* ** *   ** * *****  * *** *      *  ** *
  **     ** * *** **      ***  (a[i]!=0)
    {
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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++)
 * *   **  ** ** **  **  *  *
  * * *    * *  * * * **  * ********* *   *    * **
*    * **** **********  ** **   *  
  * * ***  *** ***   ***  *** ****** = '\0';
**  *    **  *** ** *  *   = i;
* * ** ** * ** *** *  **       (i = 0; i < count; i++)
 * **    *****    ** * *
* * **** ** *  *  *     **** ** * ***** *** **   *         = * ***   *** * * * * * ***  ***  :
* **     *  * 
*  ***** ****   * ***** **  *  * ** ** **   * * ** **  *  *  
       ***  * **    ***    
}
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   *** **  *          * 
   * *    * *  ***  ***  
int ***** 
{
 *  **     **    char a[1000];
**    ** **   * **   *   ** 
   **  * * *  *  int i;
 ** **  *    ***   *  *  *** **    ****
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*  *** *  * * *  ** ** * ******    * *  ***  * *****   * ** **   **  
  ** *    * ** *      {
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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')
* **    * * **  *  ***** ****  *** *    * * * ***  ** ** **  *    *** **  * *  *** *  *    *****  * * **** **  
   **     ** **    *    *  ** *  ** *** *    *  * *  * ***  *    **  **  *  *  * ** * *   *   *  ***   ** ** ** **     * *****   ****  * ***
**       * ****** * *** ******** ** * * ** *  ***  *  ***** *     **   *** ***  **** **** * * *  *  *** 
*   *  * *      * * * ******* * *     * ** * **     ** * *      **   *     if(a[i]>='A' && a[i]<='Z')
  *  *   * ***** *** *     ***** *  ***  ** *   ***  **  **  * * *** **  * **  ** * ***** *  * *    ***
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* **  *     *   * **  ** * *   * ***** * ****  * ***       *    *  * *     * *   *    *   **  ****
* ** *   * ** *** * * **   **  **  ** ****** * 
 *   ** * *  * * ***  * * * *  * *  *    *  **  *   ***** * ** ** *  
}
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