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