[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