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

Hidden content!
#include <stdio.h>
int main()
{
    char a[100];
    int i;
 *  * * *  **  ** *** * * ** ***
***  * *** *      *    *   * **        ***  
 *       * * **      *** *   * **  **** ****     * * ** * *** * ***  *   *** **  
   ** **    ** ** **    *  **  * * ** *     *  *  *** **       *  **** *  ** *  ** 
* *  ** ***** ***  **   ** **    **** * *** * * *  *  **** ****  *** * **   ** * *  * **   ***  ***  * 
* *    * * **  **         * *** *  **    * * **  *   * *   ** ***** ** *  *   *
***    *  ** *   *  * ***  * ** 
* * * ***          *   **** 0;
}

Comments

prog.c: In function 'main':
prog.c:6:5: 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__;
              ^~~~
/tmp/ccsN5nEo.o: In function `main':
prog.c:(.text+0x1f): warning: the `gets' function is dangerous and should not be used.

Answer 2

Hidden content!
#include<stdio.h>
#include<string.h>
int main()
{

  *** * ******  ***  *****     i;
 **  **  ** ** * *  *  * * ** *** str1[1000],str2[1000]={0};
*    *    ** *   *  *  * ***     *   **  ** *      a sentence to convert upper to lower and vice versa\n");
*** **  *  ***  **     *** **** ** 

***  **** ** *   ** ** *  ** * * *    ** * * ** * *
**  ***    ***** *   * * **   
  * *****  *** *  * ***  **** *****  ***** ***  *** *** ****  ** ***   *   &&str1[i]<='z')
 * ***  ***   **      ** * *     **   * *  ****     * ***
  *  *    * **    *    * *   *     ****     ***    *   * *** *    *   * *      * **** *      *  **    *** * 
 **** * * **   ***** * * *   ** **  ** *  ***  * *** * 
 *** ***   ** *  *  **  * ***    * * **   *  ***  * *   **      *  *  **     *   *   ** ****
 **   ************  *  **   *    *  **** *  *   **  *** ** ***** **  *  ** **  *** ****  *  * 
** **  * ***     ***** *  * 
* ***  * **  **** *****  *   *
 **   ***** ***  *   *  * *    * **   * *    **     *  * * ** *
**  *   ** *  * * * * ***
}
printf("%s\n",str2);
return 0;
}

Comments

prog.c: In function 'main':
prog.c:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(str1);
     ^~~~
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/cc2ji0XA.o: In function `main':
prog.c:(.text+0x3d): warning: the `gets' function is dangerous and should not be used.

Answer 3

Hidden content!
#include ***     *     *
#include   **   ** * * ****
#include * **   ** ** 

int main()
{
**** * *** ** *     * * array[1000] = {0};

  ** *  **     *   *  ***    * ** i = 0;

  **   ***  * **  * * * **   ** *  *  1000, stdin);

***      * ** **  * ** *** ***  len = strlen(array);

 **   ** *  *        ***** * = 0; i < len; i++)
 ** *  * *******   *     **
* *   **    * * *    *  ***  *   ** **   *  **  *  ** ** * *** **  >= 'A') && (array[i] <= 'Z'))
*  **   ***  * * *   **    *   * * ** ********* ** ***   
  *  ** ****   * * * * **       *    ** * *  *  ** *      * **  *  *  *** *****   * += 32;
  ** ***    ******  ***  *   * **** ** ***    * ** *  
    ** ****   **  ***    * *   * ** *  **   **    *   ** * if((array[i] >= 'a') && (array[i] <= 'z'))
  ** *****    ****   ** ******* ***  ** *  * * **** **
   *   *  *    **  *** **   *     * * *******   *  **   **   *    *     -= 32;
 **       * * **  * **** ** **  **** ** *  * *  ** ** **

 * *******  *     *****   ** *  *** * * * *****   **    * **  *   **   * * ** * array[i]);
***  *  ** *   * *    ** * 
 ** * * ** ****  **  **  **  **** ** 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 4

Hidden content!
#include  **  **    * *  * 
#include **  *  **  *     ****
#include *  *  **** **    **

int main()
{
 ** *    * *  **      *  **   a[1000];
** **  **     *    **  ** i;
*  **    ***** **** * *** ****    * ** 

    *    **  ** ** *  ** **  **  len = strlen(a);
*   * * * *   * *     * = 0 ; i < len ; i++)
*  * ***  ***  * ***   * **
****** ****** * * * *      * *** ***** ** *  **** ** **   >= 'A' && a[i] <= 'Z')
*** * ***  * **    *  *  **    *  ** ***  *  *** * *** **     *  ***        *   *  *  += 32;
**   ***  * * * ***** *  *  ****** * ******* ** **  ***  if(a[i] >= 'a'       *** ** a[i] <= 'z')
***   *** * *   ** ** * * *   ****    *     *   **   *    *   ****  * * * ** ****    -= 32;
  ** ** **    *  * ** * * **  ** **   ****       *  *   * * ** * * *    ** * ***    
* * **     *   ***  * 

 *    *  ***** *  * * *   *  0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 5

Hidden content!
 *  * *** * * ****      
* **  **** ** *  **   * *

int main()
{
int i,txtlen;
char sentence[1000];
*** **** ***    

* ** *   **  **

**   * * *** ******    *
{

*  *  *  * ***  * * *   ****   (sentence[i]>=65 && sentence[i]<=90)
*  * ** *       *       **   ** **  * ***     *
*   *    *** ***     * ** *** ****  **   **    ** ** ** * *  ** **  ** *  * *  * **   **
**  * ** ***   * *      *   *  *  * *   * **    * ***   *  * **  ** * ** && sentence[i]<=122)
***     * **     * ** ****  *  ** *** *****   **  *** 
 * **** *   * * *  *** * ***   ** * **  ****  * * * **   * *   * **      *****  *  *  * *   
 ** ****   **  ** *  *** * *** ** *  * *  ***  * **   *** * *
** * * ***       ***  *  *  **
}


}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 6

Hidden content!
*   **    *    **   *  * 
** *** *   **    * *  

int main()
{
int i,txtlen;
char sentence[100];
* *  **  * *  *

   ******* *   ***

*    *  *   ***  **   *
{

 *** ** * *    *  *     *  (sentence[i]>=65 && sentence[i]<=90)
 *  **   * *****  *** * *    *  ** *** **     * * ** **  
 ** ** *** * **    * *  *  ***   **** * * * *** **** * *  **     ** *****  * ** **** 
 ** ***** ** ** ***  * *  *** **    ** * *   *  * ***** *****    * * *    && sentence[i]<=122)
* *   **   * * **    * *   * ***  * *  ** ** *  *   * **   *
** *   *  *  *** * * ** **  ** *       ***  ** **   **    *  *    ** *      *       **
*   ** **** *  **  ** * ***  ***   * ***** *      * **** *
* ** **   ** **  *  * ** * * *
}


}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 7

Hidden content!
#include <stdio.h>
#include  ** ** ** **  

int main()
{
*   **   *  ****  *   *    * * array[100] = {0};

** * ****  *  ***    *****  ******* i = 0;

  ******    *     *    ** ***  *   = 0; i < 100; i++)
   * ** * *  **** ***  
 ******* **    * *  * *  *** ** *** ****  **  **  * ** **  *** **    ** *    &array[i]);
***** * **** **   *  *  *    

 *** ***   *****  *** * = 0; i < 100; i++)
* *   *   ** *    * *  
* *    **** * **  **      * * *   *    *  **    * * *** ****  ***  ***  >= 'A') && (array[i] <= 'Z'))
* ***  ** * * ***   *  * ***     ** * * *  **** **  ***  *
 * * ** ** * **    *  *** **  * ****   ****** * **       ****** * **  * * += 32;
 ** ***  ** *   *  ****** * * *  ***  **   ** **  * *
 **   *  *******   ******* *   ****  **   ** *  *****  *   if((array[i] >= 'a') && (array[i] <= 'z'))
   **  *         ** *  * ****  * **   * ** *  **  * * * * * 
 ** * * *   *** * * *******    ** ***  ** ******** ******* * **** ** * * **    *** -= 32;
***  ****    * *** *     ** * *  *  ** *   ****    * ** *  *

*   ****** *****     * * **    **   *    ** * ** ****  *    **   * *** **** array[i]);
** **** *    * ** * ** ****   *
 * ***   **   * **   * ** * *  0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 8

Hidden content!
#include ***  ***** **  *
#include   * ** ** * ** *
*   ** * * * **  **
int  * * * 
{
*    *    *   * * int c,sws, sayac;
  ***     *** * * * * * ****
    ** *** **     ** **  ***   ***** *  1000, stdin);
*** *  * **** * ***  ******     =  * *  *   **  ***
  * ** ** ***  ** *** *  ** *  * (c = 0; c<     
 * *  * **  *    **     *   *  sws = * * *  ** *  * * **   :  * *   *  *   *  **  ***   *** }}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

prog.c: In function 'main':
prog.c:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(string);
     ^~~~
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/ccfLRc9i.o: In function `main':
prog.c:(.text+0x2f): warning: the `gets' function is dangerous and should not be used.

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

prog.c:2:19: fatal error: conio.h: No such file or directory
 #include <conio.h>
                   ^
compilation terminated.

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 9

Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
    int i,t;
    char a[300];
 *   ** *  *  **  **  ***   * ****** ** 
 *  *  * ***** *  *  ***   *   *      * * * *  *  * *
  *  ** ** ** * ***  * *  **  * *  ** *  ***    *  *    ***  ****
* ** * *  ****  * **  *  * ******    *  ****  *    ** **      ***  *  **** ** * * 
* * *  *       * ******  * * * **  ** ** * *   *   **    * * && t>64){
*  *       *****  * * ****    *     ** ****  ***  *   ****        **  ** ** *    * **  *
 * *  *  **  ** *  *  * *  **  ****** * ** ** *    *    * *        * * *  * 
***    **  ******** ******* * *** * ** * ******  *
 * * *    * ** *  ***       ****  **     ** **  **   if(t<123 && t>96){
*      ** ********  ****    * **   * * *  *** ** * * *   *  * ** *****      * * *
*********  *  **  **     ** *****  *  *   * *** ***** * *** *** *    * **  *   ****** *** *
*       * * *  * ****  *** *  ***  *  * **    ** ***  *** 
* **   **  * * * * *  **** ***   ** * ** ***  *** * ****  **  **   * *   *  
    }
 **** ****  ****** ****  *  * *  *    *    *  ****
 **  * **    * *  *  * * ****   0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 10

Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
    int i,t;
    char a[200];
  **    *** **** *  * *****  ** **    **   *
 ***   *    * **** * *** * ****  *****  *   * * *
 *  **  *** ****     **   ** *  * *  ****** *  * *** *** 
**   **  *  * * *    *  ** *  ***   ** ** ***  ***   ** **** ** * *  *  **   * * ** 
*   ***        ***  **   *    *  **** * **** ** * **  * ****** * && t>64){
* ** *  *********   *     **   * **  **      ***  * *    *   * * * ** * *** *** * **  ** 
* * **   ***  ** *  ***    * * **    * **   *    *  * * * * *    **  **  * *   * *  * 
*     ** * ******  * * *  *  ** *** ******* *    *** 
  ** * *  *** **   *   ***  *  **  *** ******   * ***   **** * if(t<123 && t>96){
   **  *   *  *** ***  * *  *     *  *****  * * * *** **   ** * * *  *** **** *  *
**   * ** ***  *****   *   ***      *    * * *   ********    * ** **   ***  ***** ** 
** * *******    * * **    *****  **  *       *  * * ***
   * ***  *  * ***  ** *     ** * **  * * **  **   **** ** **  **** ***  *    **
    }
**  * *****  ** *  **   * *  * *  ***  ** ** *
**** ** * ***** ** **  ***  *   0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output