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;
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 ***  ***   *** *  * *      
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** **   ** * * *   **  ***   **** **** *  **   **  * **   * **  ***** ** ***  *  **** *     *
*                *      *   ***  * *  ** * * **   *  ** * *    * *  * ** ** ** **   * *** * **** 
***** **   *  **********  ** ** *  *      * * **** *** * *   *** *  *   *  *  * 

    }
 * * *     **    *  *  * *  **** **  ** ***** * *
    ***   * *      ** **** *** ** 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;
** **** **  ***   * * *  * ***   *  *  *** ****
**  * *  ***      *
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 **  ** **    ** * ** *    **    * ***** **** * * *    **           *******  *  * * *


*  **   ** *** *  *  **   **** * *  ***** ***    ***  **    * * *** ** * ******* * * *  * 
  ***  *       * **** ******  ****    **   *   *  *   ***    ***  ****** **  **  **


    }

***      **  ** * ** *    *** *  *******  ***    

 ***   ********     **    *  *** 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