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
Case 2: 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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   ****       * * * **

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** ** *****  *    *    * 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 ** ** ** *    
 ***    * ** * *   **
 ** * * * *** *  **  
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)
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') {
** ** **  * * ** ** *     *  *   *  ** = s[c];
  *** **** * *   * **  * ** ** *  * *   *  *  (ch >= 'A' ** **   ***    * ch <= 'Z')
**  *  *** * * * *** ** *  * **  *** ** *   * *** ** *** *  * = s[c] + 32;
*   **  **   *  *   **     * *****  **  *  if (ch >= 'a' ******  * ch  **  * 'z')
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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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    }
* * * * * *  **   * * *  ***    *  *   ** ******
*   *  ***   **   *         *** * 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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** **   *     *    ********   * *     }
*  *  *     ** * }
 **** *       *  *  *  ****  **** * ***
}
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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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