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