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

    }
 * * **** ***   * * * ****** *  **       * * *   *  * 
*** ****    *  *  **  * ** **  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