[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