[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