[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;
 
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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