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;
*       *   *  * **   **  * *   * * *    * *
* *   ** *  **** ***   ****  
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  ***  * ********     *** *  ** ***  ** * **   ***   **** *    ** *   * *  **  * **** ***      
  ***   *****  ** * ** *** **** * *  ****  ***** * *****      ** *      *     *   *

    }
** *  ** **  *** ** * *   ***  **    ****  *  *   
  **   *   **    *    *  ***  ** 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