[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*b);
** **   * **  * ** * *   ** *
**** * * *         *  *  * * ** * **** ** *  ** (a*b)+a);
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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;
* ** **        * ** *  **
*   *   *  * ** **  **  *     ** *      **  ****  ** *  *  **
*****  ** * * *** ****  * *
** ****** *  *  *   *** * **** * ***  * * ** *  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 () {
    ** * ** 
** * ***** * 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