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