[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.