[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);
    
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*  **** * ** ** *** **      * ** *       *  * * * *** * *  *    *** * *  **    ** * * *** *****  ** ** **  *   * * *  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[]) {
  *   ****  **  ****  ****** 
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***  *  ** **   *  * *  *    *   **    **  ** &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