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()
{
   *  * ** * *  **    *    a[100];
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    }
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}
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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') {
**  ***  *   *  **      **   * *** *    = 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)
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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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  **   * ***   * ***  *     *   *   * *****  *  *** * = a[i] - 'a' + 'A';
   **  * *** *         **   * ***        *   *  *  * *
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  *  * *****    * **    *  *****    * **   *   ******
***   *    * ***     **** *  **  * *    *  *  ** * = a[i] + 'a' - 'A';
** ** **** **    *   * ** * *  ** **  ****   **   **  *  * 
}

printf(  ** *    **   a );

*** *  * **  **    * *** **
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.
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 0: Correct output
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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*     *  ****** *     **   * ****      
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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)
    {
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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++)
**     *   *   **   ** * *  *  
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****   * **** * * ***  *****  *****
* **   *** ***** ***  ** * ** *  ** * = '\0';
**        ** ***  * * *  * **** *  = i;
 *****  * **  * *    ***   *    * (i = 0; i < count; 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')
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     *    *  * **   ****** * * **  * ****  * *  **  ***  *    ****** * ***  * ****** * * if(a[i]>='A' && a[i]<='Z')
  *** * ** ** *   **       *** ** **  **   ***** *  ***  *** *  ***  *  ** * *****  ******  **  *** *
************   *   * ** ****    ***    * ***   **** *  * ***    *    **   * * ** *     * *  *  ** **       * ***** *** ***  **  *  **** ***
 *   **  *   ** *  ***  *  ** ** *    *****   *   **** ** **  * ** **  **  *     **  *** *  *   *   ***  ** * *     *
 ** ** ** **   * ***          * ** ** * ** * ******  
* ****  *       ****      * *** *  *  *    *   *** * *  * ******   
}
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