[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.