[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