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