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