[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.