[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);
    
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 ** *  ***********  *  *  ***  *   ** *** * **   ****   * * * **** * **   *  **       *****  * * ** 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;
  *  *   *  * ** *   *  *
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* *  * * *** ***      *        **  ** *  ******* *  * **   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