[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

Hidden content!
#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

Hidden content!
#include <stdio.h>
#include <stdlib.h>

int main(){
***** * * ***  ********** * **  * a;
  *  ** ***** **** *  ** *   * * b=0.07;
**** ***  **     ***  ** *  
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 *  *** **  **** *   *  ****    ** * **      *  **** a*b);
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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

Hidden content!
#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

Hidden content!
#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

Hidden content!
#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

Hidden content!
#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

Hidden content!
#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

Hidden content!
**     ***      *   *    

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

Hidden content!
  *    * ** * **  ***
#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

Hidden content!
#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