[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.