[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.