[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.