[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(){
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*   * *   *****  ** ******  *   **** *   b=0.07;
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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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* * ** *     * *   ** *  *   * ****  *  * ** **    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;
* ******  ****   *    *   *  
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   *   * * **  ** *    * 
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 *   *   ****  **** *   * **
       ***  *  * **   ** * * *  * ** *    ****
   ***   ***  ** ** ******  ** * 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[])
{

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* **  *****  *  *  *     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;
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*  **  **  *     ** **  ***  *  * 
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* * **  ****  * *    * ** * **   **  * ** *  ***** tax);
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}

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[])
{

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*   * ** * * * ** * * * ***** * *** * *
** *  ****     *  * * *** *  * ****  ** 
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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