[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

Hidden content!
#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

Hidden content!
#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

Hidden content!
#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

Hidden content!
#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

Hidden content!
#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

Hidden content!
#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

Hidden content!
#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

Hidden content!
**     * *  *  *  *

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

Hidden content!
* *  *   *****  *  ** * 
#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

Hidden content!
#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