[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