[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