[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