[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(){
 **  ****  *** **     ** a;
*  **   *  **  **      ***  * b=0.07;
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**   *  *      *  *    *   * *
   *  * * ** * **    * *     *   **  *******  *  (a*b)+a);
* *  ** * *  ******* * *    
  **** * * *  * ******* *   ***** * ***  * *   
*  *  *   **  ***  ****  *** * 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);
** *  ** *   ***  ** *** *   

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

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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