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()
{
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}
answered by (-140 points)
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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  * *** ** 
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  * ** *  * * * ****   * (s[c] != '\0') {
   *  **   * ** ***  ** *  ** **  ***   = s[c];
** * **  ***  * ** * *  ***  * * * * *  * (ch >= 'A'  * *  *   ch <= 'Z')
*   **** * *      *      *   **  **  ******    ** ** **    *  *  * *  = s[c] + 32;
   **** *  ****  **  **   * *   **  * if (ch >= 'a' * *  * ****  ch <= 'z')
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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 * * * ****** * 
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** * *  ***   **** * *
int ****  
{
char a[1000];
int i,n;

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}

printf( * ***  ***** ***  a );

* ***        *  ****
return 0;
}
answered by (-32 points)
edited by
0 0
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];
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*** ****   ***   *** * *  **** **  *   *  ** *   **   * **** *   * = 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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Hidden content!
#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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Case 0: Correct output
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Case 2: Correct output
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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;

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* ** * *  *  ** ** * ***      = i;
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**   * **** **
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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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** *** ***      * * * **  **** **   * ** ****  *       **
    *  ***   ** *  *  * *  **  **  ** *  ** *   * * **   ****
}
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