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