[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;
    
***** * ***      *  *** ***** * * * * *  * ****  ** **** 
 ****** **    *****  *    * ***  ***** *   * * n*m);
    
 ***** *  *     * * ** *   ** *****  ***    *  *   
   ****   * * ****  *   ** * ***  *** *  *    *** * *  *  **** ***  * ** * * *  *  *  * * * ** **  *  * *** **    *  
     ** *   ****** ******      * ** ***    *    **    *    *   ** *  **** **     ** *  **   * *     *     * 0;
  * ** **  *  **   *** **** * *  * *  *** * ** ** *     * *  **  * * * *  ** * ** **  *  *  * **   * ** * 

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;
**     **  ***** *** **** *
 *** * ****   * *****  *    * *   *** **** **   ** &a);
 *** **  **  * ***  ***     * **  *    *  **  *      a*b);
** *  * ****  * * * *  ***
 *  *****    * *     ** * * * **  * *  *****   ***    (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;
 ******** ***  *      *   
 ***  ** **  **  **   *** * ** *  * ** *** * * **
 ***  **    * *  * *  * **  *
***** ** *      ***    *****      *  * ***   **   *   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;
 
 *** ** *  * * * ** ** ** * **  *
  *  **** * *** *   **** **  * ***
***   ****  *   ** * *********     ** 
 * *** **   *  * **   *** *   * * * * **  *   *   ** *   * * * *   * * *   * **  * **  ** ** *** *  
 *  ** ********  *  * * **  ***   ****   *  ****   
* *** **** *** 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