[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[]) {
**   **** ** *       *  ** *  *
  *       ** **  * ** ***   * 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