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