[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.