[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.