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