[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.