[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