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