[Makeup] Final Exam 1 (20%)

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()
{
* ***   ****** *    ****     *  i=0;
***** ***   * * * **  ****  a[1000];
 *  **      ***  ** * *   *   *** *
*** *  ***     ** *  * *   ** (a[i]!=0)
    {
**   ***  **  *** *** ***  ***  * *  ***** **  *  **    (a[i]>64 && a[i]<91)
  *     * * ***  ** * * * * ****    *  * **        
  **   *   *    **    **   * *    ***  **   *     * ** ** *  ** *  ****  ** ******  *  *
***  ** **** * *   ******  *   * * **** * * * ***** ***
*  *** **  *  * *** **  *   *** ****   * **** ****** **  if (a[i]>96 && a[i]<123)
  * ** ********   ** **  *    ** * *** *   *** **   
 *  ** * ***** ******  *** ***** **  *   ***   * ** * ***   * ** * ** **** ** * * **  **    
* * ** ***  *    *** ***  **** ***** *** ******* * * **  
 ***   *** * *  * *   *  ** *    ** **   ** ****     
    }
*   ***  ** * ***  * **    * *  * *  **    *** *  * 
    **    **   **  ** *   *   *  *  * 0;

Comments

prog.c: In function 'main':
prog.c:20:5: error: expected declaration or statement at end of input
     return 0;
     ^~~~~~

Answer 2

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

int main(){
  **** **   * *** ***   ***  str[1000];
  **   *    *    *** * **  ** * * * len,i;

 * *** *  *  *  ** **    * *  *  
** ** * ********  ***** ** * ** * = strlen(str)-1;

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

***** *  ***** **  *      * ***  *     **  * *  *** 

***   * * **  **** 0;
   ***   * *     *

Comments

prog.c: In function 'main':
prog.c:8:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(str);
     ^~~~
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/ccBoKIfO.o: In function `main':
prog.c:(.text+0x25): warning: the `gets' function is dangerous and should not be used.