[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