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