[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