[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.