[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