[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