[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.