[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