[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