[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.