[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;
*** ***    *  *  *  * * *  * ** b=0.07;
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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(){  *  *  * * ***  ** *** *  *  *  * 
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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;
  *  ***** ** *  *  ** *  * 
  * ** * **  **      **  *    ******  * ***   **  &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[]) {
******* ** *  **  *     * **   
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 * ****  ***  **  *** * * ***  ** **
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*****         * * ****   **** *  * **  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