[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.