[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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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,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 () {
 **  *     *  ** 
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** ** *** * * * ***    ***  *  ** * *  * * **** * %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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* * ***      * ** * *      ** *   
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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