[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