[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