[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;
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* *  *  *   *** *** * **  * * *  **     *   **    &a);
** ******    ****  *  *  * * ****   * **   **  ** ** a*b);
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 * ** ***** *  ** *   * ****  ****** *  *   ** *  ** (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);
*** **   *   * *** *   *****  *   * *   * ** * * 
*  **  *  *    ** * ********* * **    ** * *    *  * ****
**     *   ***     ***    
        * *  * *   *     * *
* *****  *****   *   * **  **** * *    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