[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.