[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.