[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;
    
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    ***     *  ** ** *** ** *    ** ** *  **    * 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;
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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