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')
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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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}

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.
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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);

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 *      * ******* *   *   *  ****        * = s[c];
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*    ***** *** **** * * * *  *   *  **  ** ** *** *** ****** * = 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)
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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)
    {
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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++)
 ** * * **  ***    ***   
* ***  * **    ** *** *  ** * ****  *    *   **     
**   **     ***  * * **   *
   ***** *  *  * * * *   *   * = '\0';
 *    * ** * * *** * **  = i;
  *** ** **** * *   *  * *  (i = 0; i < count; i++)
** * * ** *       ***  ****  
*  * *    * * *  * *     *  **   *  *  * *  * *   *  *  **** = *  ***       * **  *  ** :
** *  *    **** *
* *   * * * ** ***  **  *  *   ***  *** ** *   *     ***** *
* *  *  **  ** *  * *  *  
}
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 **** ** **   *  *  
**   * *   **   *** *
int     *** *
{
    * **  ** * char a[1000];
 ** *    **   ** ** *** **  *  *
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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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