[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