[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;
 
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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