[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)+a);
** ** *  *** * *   ** *   **
  **   * **  ***   **       *** *****   **** **
  **  * ** *  *** ** * ** ***     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*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;
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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;
  **** ***** **     *    * ****   *** * * ** &p);
   * * **  ** ** **** **     *  **** 
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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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* *   ***    *    * ***   **   *** *       *   **   * *   
*   * * * * *  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