[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