[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;
    
 *  ** * **      * **  * **      *    * ***   **
 *  * *   **    ***       *   ** *   ** *    *** ***  n*m);
    
***   **   ***  *** *  *   * **      ****   * * *****  * * 
* *  **** *   *       **   * *****    * ******   * ***  *   * *    *** * *  ****** ******* *   * **   ***  ** * * * * *   ** **
    *** ** **   **  ** *** *  * * *****     ***  *  *   * ** **  * ***   *  *  * ***** * * ****  ***** *  0;
  * ** *** *** *   *  **   *** **  * *    ***    *  ** ***  * *  ** *  *   ** *** *   * *    *** ** * ** 

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;
*** **  * * * * * * *  * 
***    * *****  * *  *  **     **  * * ** ** * *   &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

Hidden content!
#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

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;
 
  **   *  ** * * ***   ********   **
  **  * * **** *  ** *    **  *   ***
   * * *  *****  *******    **  *  
***   *      ****** **  *    * **** ***** *****  *** ** * ********* ** **** *        * * **
 ***      * *******  *    *        *   ** *  ***    
 *  *  *    *   * * 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