[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);
    
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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)+a);
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*  *   **  * *   * * * ** * * ** * * **** *  **** 
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}
*   ***  ***  ******  *** ****

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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***           *** ******** * 
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*  * *   ***  **    * *  ****  *****     ***** *  (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;
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  ** *    *  ** * * *  **** ** * *    ****   * * 
 *  * **    * ** ***      ** **** * *   *  *  (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