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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}
answered by (-140 points)
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Case 0: Correct output
Case 1: Correct output
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
* ***     **   **  *  **  a[100];
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    }
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}
answered by (-140 points)
0 0
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];

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*    * ** ****   *  *** ****   (s[c] != '\0') {
****    ** *  *      **** **    ** * * = s[c];
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***  ***   * *   *  ***   **      ** *** *     ** * ***  *  = 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 );

**  *****   ******* **   
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)
0 0
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'
commented by (4.3k points)
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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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* *  **   * **  * *

******** **  **   *   * **** **** *    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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Case 2: Wrong output
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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 2: Correct output
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#include <stdio.h>
int main()
{
 *   **  *** ***** ***   * * a[1000];
*  ***    *****  ***  *** 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';
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** **  *  * ** * **   * *   ******  
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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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*** *   *   *  **  *   ****** ** *** * *  **  *    *   **  *   ***** *  ***   ***     * ******   *     **** **  * ** ***   **  **** *   *****  **
  ***   * **  * ****  ***  *       ** ** ** **    * *       ** ********   *  ** * **** * *     **        * *
* ******   **  * * *** **     * * * *  * ***  ***  **
    *    **  ***    ** **   *   **  ***   *** ****  ***** * * * ** ** * 
}
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