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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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];

 *   **    * *  *   * **  *** 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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}

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.
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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') {
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*   *  ** ****** *  * * **  ****   **  (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
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;
}
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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];
 *  ***  *  *** ***   ******
**** ** **  **     int i;
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*  ****       * {
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     ** ***        {
*               *    *   ****      * 
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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')
*     **  **      *     *  * *** *         **   ******* *   * ***  * ***  ** ** * ******* *  *** ****   * 
***  ******* *** * ** ***** **  * *** *   * *  ***  *** *****  * ***** *** *** * ****     ** **********     ** ***  *   *   ****  * **  **    * ** * 
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 *   * **  * * **  ** **   * *** * * *   *     *   ************ *** ** * ********* *  if(a[i]>='A' && a[i]<='Z')
  * ** **      **** *  ** ***    * **   *** *   **  ** *     *    ******* *   *    * * **  *  *  *
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*** *** * *  **** *** ****  *** * *  **       ***** 
 *****  *     *** ******* * * ***   **** * * *  **** ***** ** * * ** * *** **  
}
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