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

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