[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(){ * *   **    *******   * * *     * *  ***
** ** ******* *** * *      ** * a;
* * ** * **  *** *  * *  * b=0.07;
** * *      *     *    *   *
***  *     ****** *** *  * *     * **      * *  * ****  
** **     *  *** * * *  **  
*  * ** * *     *  * * *** * *     * * * ** *****   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[]) {
* ***    *   * ****** *  * *
**  ***   *   **  *   * p,tax,total;
  *** **  **  **  *   ****    *  *** *    **  ** &p);
 **  *      ** *** **  *** * * **  *** 
* ** *     *     *** ***     *** *
  ***** **  **  * *  ** **  * *    * * * **  * * * 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[])
{

 *** *      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