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