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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 *  *  ***   ** *  * ***  **  * i;
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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()
{
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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];

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 **** * *   **  * **   

* ****  * ***  * * ** ** (s[c] != '\0') {
*   * * * *** *   ** *   * * *  *   *    = s[c];
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   *  ***** *  ***  * ***** * * *   * *     *  ** * ** ***** *   = s[c] + 32;
 * *        ****  *  *  **** ** *   * *      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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{
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        * *  **   ****     * ****  * **  * *   *    
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   * **  *** ** *** *  **  * *   *   * * *   *** *** ***
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**** *** ****** * ***  *   **** *** ** **  *  **   **** 
}

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

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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.
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'
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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)
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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#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;
      *** * *  * * ** *    ** * *  ** **
  ***     * *  ***   * *****  (a[i]!=0)
    {
*     **  *      * *** *** ***** ** * * * * ** *   *    * (a[i]>64 && a[i]<91)
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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;
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* *  ** ** *
**** ***   ***  ** * **** **  ****** ***  * ** * ** * *  
   *  * ** ** * *** **       
}
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** * * * *  ** *  ***
  ***** *   *  *** * ** *
int   * ** * 
{
      * *  **  char a[1000];
**    *  ****  *   * *      
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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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