[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