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