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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}
answered by (-140 points)
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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;
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   *** ****** **  **

 ***   **  ** * * *** ****     ** ** *   * 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 * ***   ***  ***
 ** *  *  ***  *   ** 
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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 );

* * ****   ***  ** **
return 0;
}
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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'
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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];
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  *   **        * ***  *     *  * * * * ** * **    * * ** *  ** = s[c] + 32;
     * * * ** *  ** *  *  **** * **     *        if (ch >= 'a'   * * *  ch    * 'z')
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* **  * *   * *      ** *

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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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#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)
    {
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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;
   *** ***** ******** * **   ** (i = 0; i < count; i++)
*  *  * ** ***** * *   **  ** 
*    *  ** * *   *  **  *  *   *  *       * **  *  *      ** = *  *     * * *    * **  ***** :
*  ** ***  
***** ***    ******   *****  * * * * * **     **** *  **  ** * 
* *     * *  * ** ****  * * 
}
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**** *  *** ** *** * **
 *  *** ** **  *   **   ** 
int *****
{
 * ****     * * char a[1000];
 ** * *      *    * * * ****  
* *       ***  int i;
  * *     ******  * **  **  *  **** * **  
** * * *   **** * {
 **** **    **     ** *  * * * * * * * *  ******  * * **  *    * 
** *  *   * *     {
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 ***  **           * ** * * }
 *   **   * ***  * *  *     ** else *  ***   **    *** * **  * ** **  **    *
 **  *  * **     *   ***   {
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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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