[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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}
*   * * **  *      *   * 

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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*   **** * **  ** *** ** *****    ** b=0.07;
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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;
   ***    *     **      * 
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* * *  *  **  * ***   ** * ** *     *  *** **  * a*b);
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* ** **    *   ********* **
**    ** * *    * ***** ****  ** * ** *      **    
*** *   **  ***  *  *        * ** 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[])
{

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*** *  ** *** ***** * ***  *** b=0.07;
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**** * * * *    ** *  *  **   ** *  ** **    **** 
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*** ** *** **    *   *    *  * *  **     *   * **    * **   *
*   ***   *** * *     ***** **   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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***   *   ** *  *  **   * ** *    * *** *  ** *   
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    * *  *** *   *  **    **
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}

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;
 
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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