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

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