[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(){
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***   * * *****  * *  * * ***  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;
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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;
* ** ** *  **  *** *  ****  
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** * *   *  * *  *    ***  ******* **   *  ****  *   a*b);
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*  * * * * **          ***   * * * * *** ***   ***  * (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[])
{

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**     ****       *****     *** 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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*  *    *  *    * *    * *  * **  *** **   *   &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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***  ** ***   *    * **  *  ***  * *   *   
 *     **    * 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