[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