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