[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