[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.