[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.