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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}
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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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   *    *     ***   * **  *   **   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)
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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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}

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