[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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}
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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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***           *  *** *** * *    * *  * *   *  *   * 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;
* *   ** **  *  *        * 
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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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**** * *** *** *  *  ***    *
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}

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 () {
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 * * *   ****  ******* **  **  **   ***  %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