[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.