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