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