[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