[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.