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)
  ***  *  * * * *      *****  ****  *   ** **    **     
*    *   * *  * **** **  ** **** ***    *   **** ***   ** ***  * ** ** * * **** *  *  ****
  * *  ***  *  *  *    *   **  **  * *****   ** **   * 
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    }
 *  * *    * *   *  *  * * ** *  ***  *       * *
** * ********  *  ** ***   *     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