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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* ***  ** *   *  * **  *  *  0;
}
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Case 1: Correct output
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
*** ** * *** * * ** *  *** *  *  * a[100];
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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') {
   ** *  **    **** *** ***  *   **** * ****  * = s[c];
** * *  *   * * ***     *** ***   * * *** * ** * (ch >= 'A'  *** **  * ch <= 'Z')
*** * *  * * * **   *    ** *  *   *  **** * * *      ***    **  *** = s[c] + 32;
      **   **  ***  ** *   * ****  * *  ** * if (ch >= 'a'    ** **      ch <= 'z')
********* * **   * ***    **     **** *** **        *  **  * = s[c] - 32;
* *  *  **** *  *  **  * ***  * * ******* 
***      * *     * *  **

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

 * ** *    ***  **  *  ***   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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  ***   * **   * **   *** * * *  **   ******    ** **  * * *
* *   * * ** *    ***  * * ** ** *  *** * * *       ** * * = a[i] - 'a' + 'A';
*** ***** **   ** ** * **    **  * *** * * *****  *  *
******  *  * *** **    **** ***** if( ( a[i]   *** * 'A' )     *   ( a[i] *****  'Z' ) )
** ****  * * **** ** **  ** * * ** *** *  * **  
   *****  ** **  ** **  *** *  ** **    ** * *   * *   = a[i] + 'a' - 'A';
*****  *    ***** *   ***      ***     *** **  *   *** *
}

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'
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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')
** ** *  **   ***** ** **   * *   * ******   *  * *** * * **   = s[c] - 32;
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*   ****   *  *      

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

 *   * *  *  *** ** 0;
}
answered by (-140 points)
edited by
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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)
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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;
  **  ** *** ** ***   * ** *  *** ******  *
*     **  ****      * *  ***   (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++)
 * *  *  ** * **  *   * 
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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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** *      * *  * ***  * ****  }
   **    ** ** }
 *******   ***** ***  * *******  **   * *
}
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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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