[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;
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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(){
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**     * **  * *  *     * * b=0.07;
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}
*  *    *  *  *     **** 

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(){ **  *    *   ***   ** **   ***  *        **
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* ***   *  * *  **  *** ***   *      *  **    **  ** 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);
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** * *  *    **   ***  *       
 *     *  *  * *  ***  *** * *  * * ***  **  **    (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;
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*     **   *** *  *   *** * *    ******* *  *  ** *
***  *  *  * **********   ***** **   *   * *   *   (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[]) {
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* *   ** **** *   * *** * ** *****    ** * * ** &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[])
{

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****   *   ** * ** ** **   *
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**    * *  *  * ** *  **  *    ** * ** *   
   ** *** *  *    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