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