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