[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