[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

內容已隱藏
#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

內容已隱藏
#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

內容已隱藏
#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

內容已隱藏
#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

內容已隱藏
#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

內容已隱藏
#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

內容已隱藏
#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

內容已隱藏
*  * *   *   ** * *

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

內容已隱藏
****  **   ** *   *
#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

內容已隱藏
#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