[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