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

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