[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.