[Final exam] Question 10

Question

Question 10: Please write a program that can calculate tax 7% (0.07) of a product price, then outputs the tax and a total price including the tax.

Hint:

*Use %.2f for two decimal points*

*Printf a new line between the tax and a total price including tax*

Input1

80

Output1

5.60
85.60

 

Input 2

452

Output2

31.64
483.64

 

Answer 1

內容已隱藏
#include <stdio.h>
#include <stdlib.h>
int main(){
**  *   *** ***  **** ***** n;
**** ** *    * **   ***** *   m=0.07;
    
 ***** * ***       ***     ** ***      **   ****      
 ***  ***   * ***   *** * * ** * *** *** ***    *  ** n*m);
    
   *  *  * *  *  * * *** **  *    *  *   *** *  ** *****
 *** * * **  **    **** ****    ******      * * ***  *  *      ***  **   * * * ** *** ***  *** ******   *      
 *   *  *** * *    **  ** *      **   *  *    * ********* ******* *** * *  **   * * ****    ** ** ***   **    *** 0;
 ***    ** **  *    *    **** **** **   * **** *    *   *  **   ** *  * ****   ***** ***   ** *** ** *    * *  * **

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output

Answer 2

內容已隱藏
#include <stdio.h>
#include <stdlib.h>

int main(){
* *** ** *** *  * ***  * ***  a;
* * *   * **** ** ***   * ***  b=0.07;
 * *      * *   *     * *
 * *  * * *  ******  **  * * *    *  **   ** * **** &a);
*  *  *   ****** ******* * ****  * *****     *     a*b);
****  *** * *** **   *    *
  *  *  *    *    * **      *** **   ** ****  (a*b)+a);
*  *  *    *** **   **       *
      *   *   *   ** **  *   *   * * * *  ** ** **
*   **** * * *   ** * ****   *** 0;
}
  **** *  *    * **   ** *   

Comments

prog.c: In function 'main':
prog.c:9:14: warning: unknown conversion type character '>' in format [-Wformat=]
     printf("%>2f", a*b);
              ^
prog.c:9:12: warning: too many arguments for format [-Wformat-extra-args]
     printf("%>2f", a*b);
            ^~~~~~

Answer 3

內容已隱藏
#include <stdio.h>
#include <stdlib.h>

int main(){   **   * ***   **  **     ***** ***   **
    * *** *       *  ***   *** a;
  **   ****  *   ***** ****       * b=0.07;
** ** **  * ****  *     * 
*** *   ** *  *  * ** ***      **  *  ** **     *  
 *** * * **** ****  ** **
  *****  **  * *  * * *   ** **  ***  *** *****      a*b);
** ******* * ****  *** **   *    *   * ** * **** **  (a*b)+a);
*    *  *****  * *** **  

 ****  *     **** * *** **  ** *  0;
}

Comments

prog.c: In function 'main':
prog.c:11:18: warning: format '%d' expects a matching 'int' argument [-Wformat=]
     printf("%.2f%d", a*b+a);
                  ^

---

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output

Answer 4

內容已隱藏
#include *  * *  *** **  
int main()
{
  * ***  *    *    ** ***  **    * * n;
    ********    * * *** *  ***      ** sum,c;
** ** *  **  *  * * *  ** ** **** *    *** ***  * * ** ******
 *   **  * *  ***     *  * = n*(0.07);
** ** *   **  **** ** * * = n + c;
 **  *  *   **  ******  **  *  *   **   ****** *    **  
  

Comments

prog.c: In function 'main':
prog.c:7:17: error: 'n' undeclared (first use in this function)
     scanf("%d",&n);
                 ^
prog.c:7:17: note: each undeclared identifier is reported only once for each function it appears in
prog.c:10:12: warning: missing terminating " character
     printf("%2f\n%.2f,c,sum);
            ^
prog.c:10:12: error: missing terminating " character
     printf("%2f\n%.2f,c,sum);
            ^~~~~~~~~~~~~~~~~~
prog.c:10:5: error: expected expression at end of input
     printf("%2f\n%.2f,c,sum);
     ^~~~~~
prog.c:10:5: error: expected declaration or statement at end of input

---

prog.c: In function 'main':
prog.c:7:17: error: 'n' undeclared (first use in this function)
     scanf("%d",&n);
                 ^
prog.c:7:17: note: each undeclared identifier is reported only once for each function it appears in
prog.c:10:5: error: expected declaration or statement at end of input
     printf("%.2f\n%.2f",c,sum);
     ^~~~~~

---

prog.c: In function 'main':
prog.c:9:5: error: expected declaration or statement at end of input
     printf("%.2f\n%.2f",c,sum);
     ^~~~~~

Answer 5

內容已隱藏
#include <stdio.h>
#include <stdlib.h>

int main(){
*  *  *  * *  *    **** *  **   a;
******    *  *  **  **  **** ** *  b=0.07;
 *     **     *****      **
* *   *  * * *   *  *  ** ***  * ***   * ** ** * &a);
*** *  * ** *****   *** ****   * ***  ** **  ** a*b);
*** ******* * ***  **        * 
*   **  *    *** *    *  ** *  ****   * ** (a*b)+a);
*  *     *  ** **   ** **  
* *   * **  ****  *** ****  *   ** **  *     * * * 
**      **  **  *** *  * ** *  0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output

Answer 6

內容已隱藏
#include *****     *****
#include *   ********* ** 

int main(int argc, char *argv[])
{

  * **** ***  *   *      *  a;
* ** *  *** *  ***    *   b=0.07;
* *** ****   *  * *** *  **    ***** *  * **  * *  *** *  *  
 * *  *  ** *   *     *   *  * ** *   * ***** * **
 ***  *   *   * * * *   *** ** *    *** *  *    (a*b)+a);
 ** ** *  *   *****   *** ** ** *** *** * * *  
*** ****    *  * **  * *  *  * *  *  0;

}

Comments

prog.c: In function 'main':
prog.c:7:13: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
     scanf("%d",a);
             ^
prog.c:9:12: warning: too many arguments for format [-Wformat-extra-args]
     printf("\n",b);
            ^~~~

---

prog.c:1:19: fatal error: cstdlib: No such file or directory
 #include <cstdlib>
                   ^
compilation terminated.

---

prog.c:1:19: fatal error: cstdlib: No such file or directory
 #include <cstdlib>
                   ^
compilation terminated.

Answer 7

內容已隱藏
#include <stdio.h>
#include ***  * ***      *

int main(int argc, char *argv[]) {
*    ***** *    ***  
***  *   *  ***** *******      p,tax,total;
 *  ****  * * * * * *****      ***   **  **  * &p);
**  * **   * **    *   * *     
* **  ****** ** *  *** *   ***** * * *
 *   ***** *  *  *  **** *** ** *  * **** * * *  * * ***  tax);
* * * ** *  ** *** *****    ***  **   *** * *****  
*   **    *** **  **    ** * * ** *** *****    *   ** * 
 *** ** * **** * **  * * ** 
     * *  ** *    *   * 
 ***     ***** *** *** *****  0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output

Answer 8

內容已隱藏
 *   * ******* **  

int main () {
  * ****  * 
 ****** *  ***  a;  **** ** *  *  *** *
   *****  **    *** *** ** **  * *      **    *  ** %0.2f\n", a*0.07);
*   * * *** *     ***  * ****** * **  **  ** **    ****   *     *
 **** **     *** * *  ** * 0;
}

Comments

prog.c: In function 'main':
prog.c:7:14: warning: spurious trailing '%' in format [-Wformat=]
      printf("%\0.2f\n",a+a*0.07);
              ^
prog.c:7:15: warning: embedded '\0' in format [-Wformat-contains-nul]
      printf("%\0.2f\n",a+a*0.07);
               ^
prog.c:7:13: warning: too many arguments for format [-Wformat-extra-args]
      printf("%\0.2f\n",a+a*0.07);
             ^~~~~~~~~~

Answer 9

內容已隱藏
**   ***  *  * *  * 
#include   *     ******  *

int main () {
*  ** *  * * 
 ** **     ***  * a; ** ** * *  ** ** * ***
 *  **   ** * **  * *  * **  ****    ****  %f\n", a*0.07);
 *   * *  * *  **  * *  **  *    *  *   ******** *   *   *       
******* * **    *  * ** 0;
}

Comments

prog.c: In function 'main':
prog.c:8:15: warning: unknown conversion type character 0xc in format [-Wformat=]
      printf("%\fn",a+a*0.07);
               ^
prog.c:8:13: warning: too many arguments for format [-Wformat-extra-args]
      printf("%\fn",a+a*0.07);
             ^~~~~~

Answer 10

內容已隱藏
#include ** ***** ******* 
#include   **  ***   **

int main(int argc, char *argv[])
{

 ** *   * a;
 
      *  ***  * * **  ** *** * * *  
    *** *    *  *   *   *     *  ** *  * *
********    **  *  *** * ***  **** ****
     **   * ****  *  *****   **   ****     *   **     ** ******* *  ***     *** * ***  * * 
  ***** *  * * ***  ***   *****    *  * *   
  **  *  *** *** 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

---

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output