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