[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;
    
****     ***   **    * *  *  * *  **  ** *    *     ******* *
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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(){
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**   *    **** **   * ** **  b=0.07;
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* * *  ****     ***   *     
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**  *   *** *** *   *  * * *  *** 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;
 **  **** * * *  * * ** * 
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*        *  * *   * * *   **   
* **  * *   *  ******* ** **      ** ***   ***  *****   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;
   ** ** * * *** **  * ** ** 
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 ** ***** *** **    * * ****      * *    ****   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[])
{

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

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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