[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