[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;
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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

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;
 
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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