[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.