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