[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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* ***** *  **  **     **  ******* **  ** ***** ***   **********    * *  *** * ******    **    *      *  ** 

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

 *** * * *     **  *  * ** * **  a;
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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[]) {
*    * **   * *  *
* * **  *****   ** **** **    * *  p,tax,total;
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* * ** ** *  *    ***     * * * * *
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    *   ** ** * *** *   * **     * *   *  * *   tax);
*   **    * * * * *  **** **  * *  * *  **  *
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** ***  ** *  **** * **** *  **
     **     *  *    ** ** 
  ***  ** ***  *  *   *   **** 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