1-11 Exercise 1: UPPER and lower letters

Question

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.

Answer 1

內容已隱藏
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
*** * * **** ** ***  *  * a[100];
 *   * ** * ***  * **    *   * *  * ***    *
* *** *** **  * *   *  *    i;
*  * *   *** ****  **  * ***  ** **   * *  *****
*** *** ***** ***   *  **   ***
 *   * **** *   * * ***    ***   * **  *   *  * *  *****  *****    *** ** ** ** *   * * **  **    * **
*****        ******** ******   *****  *** *   * ** * *   * ***    ***  **** * ***  *  *    **** **
 *** ****** *   *   * ********   **    * **  **** * * **     ** *  *   *   *   *  ** * ******  **  ** * *
 *****   *      ***  ** *      * * *       *  **  *    ***  *  ** ***  *  ** 

    }
 ** **   *   *   **  *    ** * *** *     *  * * * ** **
 **  ********* ** *** **  **** 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 2

內容已隱藏
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
    *   **        *     * ** ***      a[100];
 *** ** * ** *  *******  ** * *  
** ** *** ***   *     ** * * ** i;
    *   ** ****  **   ***   *** * * * *    * ***
 ** ** * *****  ** *  * * 
**** **      ***** *** *  **  *  ** * *   ** *  * ***** **    ***   *   **  * *   ** ***** **** 
*        *  **  * *  **** ** *   ***   *** * **    **** ** ***** *  *    * *** ** 
 * ***** ** *  * *** * ** *** ** ** ***** *   *** * * **  **  *  *  **   *  **   ** *  * **  
* ***  ***   ** *     *  **  *** **   *  * * *   **  **   ** *  *  *   *  ****  ** ****

    }
 * ***********    **   * *  * **** **  *** * *
**  ** *     ** *   **   ***    0;
}

Comments

prog.c: In function 'main':
prog.c:13:28: error: expected expression before '[' token
         else if(a[i]>='A'&&[i]<'Z')
                            ^

Answer 3

內容已隱藏
#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;
}

Comments

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.

Answer 4

內容已隱藏
#include  **  ****    ***   
    *  **  ***   ***  * 
 * ***  *  *  *****  *** 
int ** *  
{
char a[1000];
int i,n;

* *  ** *   *   ** : ** *  );
*  * *  **   *    ** ***  
 * ** 
 **     * * **
{
*      *         *  ** **** ( ( a[i] >= 'a' ) **    *  ( a[i]  *   * 'z' ) )
 ***************  * *  ** ***     **    ***   *  * **  
*   ** ****     *  ***   * * **   ***  *    * * * * = a[i] - 'a' + 'A';
 *  **   *** * *   * *  ****        **  *     **
     * ***** *   * *** ** **  if( ( a[i]  *  ** 'A' )  *****  * * *  ( a[i]    *   * 'Z' ) )
 ** *   * **  ****** **    ***** * *** **  **      ****** ** 
* *   *    * *     *  * *  *** *****  * ** ** ****   * = a[i] + 'a' - 'A';
  **   *  *  *   ** *** * *  *        * *         * * * *
}

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

**  ** ***  **  * * *  **
return 0;
}

Comments

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.

---

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'

---

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 5

內容已隱藏
#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;
***  * *    **   * * ******  *  ***  ** *
 * * * *   *  *  ** * 

*  *   *  * **   ****  * *   *******      s);

 ** *  *  *  ** ** 0;
}

Comments

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.

---

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.

---

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);
            ^

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 6

內容已隱藏
#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main()
{
*    * *  *****     *     *  * * a[1000];

 *****  ***** ***** * ** * *  *   *    ** 

  * **  *    *** *****  * ** i;
  * *  ***    * *** *****       ***    **  ** * 
  ***  ******** **** *  ** ***
  *** ******   *    **  ****  * *   *  *** **** **** * ***  **  *    *  **       **** *
**** *** *      *  **  *** *  *   *      **** * ***         ** *   * * *  **** ***


  ** ****  **  * * *   **     ****  *   ****  * *    *  *  *  *  * *   ******** **  **    * * **    ** *
 * *** * * * *  * **  * *  * ****  **    **     *  *   *****     ** ** ***     * *  **  * *


    }

*    **    * *   *  **  *    *  **  *  *  * *  ****

***** *    *   **  **  *       * * 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 7

內容已隱藏
#include <stdio.h>
int main()
{
*     *  * ****  **    * * *  a[1000];
 *   ***** *  **  *    **   * *  i=0;
 ** ***  * *     **  **   * * ** *
    *** * *** *   ****     *  (a[i]!=0)
    {
**     **** * ***** * ** *   * ***  ***** *   **  (a[i]>64 && a[i]<91)
*  *** ****  ***   *  ***  * *  * *  *** * *** * ** **
  *   *** ***   * * *  * *          ** *  ***** * **   ** *  ** **  ***  *** *  * ****  *  * 
 *     * **  * *  ****    * *******  ***   ***  
    * * ** **  * *  ***  * *    **  **       ***    * * ***   if (a[i]>96 && a[i]<123)
 *  ***       **  ** *  * *  * ** * * *** *** *  *  ***   **
* *  **** ****  *     * * * **  ***** * ** * *   * * *      *  *      ****   **  *   ***
**  ****  ** ***  **  ** * ****   *  *     **   **  *
******  *  *****    * **** *  **  *** **   **  * *     *   **   *
    }
             *** ** * *  *****  ** **  ** **    
*   * ** * * * **  * *******  *  0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 8

內容已隱藏
#include * ***   **** **  
#include   *   *****   

void main()
{
  *  **** *  ***** ***  ** * *  sentence[1000];
* *   *   ** * *****  ***   * **   count, ch, i;

** *   *  ** * *   ******  (i = 0;(sentence[i] = getchar()) != '\n'; i++)
* *  * ** * *** *  ***** ** **
 *** **** * * ** **  **** **      *   **  *  *  *   **  ** ** 
* *** **  **  ***   **   ** *
**   ******** * *  **  *  * **  * = '\0';
*  **    *     *  *  *    = i;
 **   *** *   ** * ***  * ******* (i = 0; i < count; i++)
  ** **      * **    *   * ** *
*     * *   ** *           * ******    * * *** * *** * =   ****  **  *** ***  **  **    :
  * ** *  **  * *
* ***  *  * * **  ***** **  ** **  *   ** ***** *  *  ** *  
    ** * *      * ***  *  
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 9

內容已隱藏
** *** * ** * *******
 **    * * ** *    * 
int   *  *
{
  *  ** *        char a[1000];
* *  **     * ***    ****  *
***** *  *** int i;
  * ***  **       ** * **** **** *   *
   *  ** * * ** *   {
   **      *      **   *  * ** *  * *** * * ** * *** ****      **
 *  *** * ****     {
***             **  **  *    ** * * 
 *** ** *   ** * ** * *   ** }
** ** **  **   *   ***** *  ***  * * else **  *   ** * * *   * ***  ****  * ***
  ******* *****     **  *  ***  *   {
*  * *  ** *     *         ** ** *     * *** *  ** ** 
* *  * *     * **  ** ****  }
    *         *  }
   ****** * * **   ** *  **   **   ***  *
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

---

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 10

內容已隱藏
#include<stdio.h>
#include<string.h>
int main()
{
    int i;
    char a[1000];
    fgets(a,1000,stdin);
*    * ***   ******  **    ** ****    *****    *  ****  
   * * ** *** ** * * ***  * *    ***  *     **  * 
**         *  * ****     ***  * *    *    *****  ** * ** *** ***   ** ** *** *      **  *  && a[i]<='z')
*  *  *  ** ** ****  *  * **  * * **** *   ****    * ***   * *  **  *** *     *   *  *******   *  * **** *** ** 
  ** **  * ***   *  * ** *  ****** *  **  **  * * * ** * *  *** **   **** **    *  * *  * ** *  ** *** *     ** * * ** * * **  * *  ***  *  ****
** * **   *** ****  * *        ********* **    *   ** *  ***** *  * **    **   *   *     *     **  * *
  *   * *   ****** ** *  ** *  *   *  **  *  *     ** ******* **  ***  *   *   **** * * if(a[i]>='A' && a[i]<='Z')
***  * *  ********    ****  ****    *     **   *  ****  **  ***  **      ******** *  * ** *     * * **   *
* *** *** **      *  *  * *     ****   *    ****    *   ****  *   **   ****    * * *   **  ** *  *** *  * **  * ** *  *  * ** **   *  * * *    *  **
 ***  ** * *   *  **** *   * * *   **   *   * *** ****  ** *** ****  ***  **    **  ***** ** * * ***
** *    * **** ****** *  * ***  ***   *** ***  
  ***  ** ** ** * ** ** ***   *** *     * * *  ** * * * * * * *  ** *  *    *  
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output