[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.