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