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