[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