[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