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

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

* *   * * 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