[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);
    
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  ** *   ***  *   * **    **  ** * ***  **  *  **  ***        *** *  ** **  * *  ******      *  ****** *   ** **

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;
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** *  **     *** * ***  **** * * * *    *** *  ***    a*b);
**  ********* * ** ***   *  
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*  * * *  ** *  ***    *** *
*  **   *** * **   * * *   ** ***** *** * 
  *   * * ** *  ** ** ***** * 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