[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;
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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;
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**    ** ** * * *** ** *    * 
**  *  **     ** * *****  ** *  *  ** ** *  ********* (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

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;
   *  *  ** **** ** ** ** * * **   *  * **  *** ** *  ***  *  
  ** ***          ********* * ** ***   *** 
   * ** **** *    *  ***** * ****  *  **  * ****   *  (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;
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 *  *** ** *  **** ******* * 
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** ** **   *        * ***   *** * *  *   tax);
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 * * *   ***  * *      *  * **
    ** ** * * **    *** * *  * 
  * *  ** * * ****    **    * * 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