[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