[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