[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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*    ***   *  *** *   ***   *   *  * 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;
 ****    * *** **  ****  ** ***   
**    **  ** **  ***** ** **     *  **  * * ** *  *    &a);
     *** *** * * *   * * * ** * * **  *** **  a*b);
 ******  *** *  *    *  * 
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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[]) {
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***       ** ** *** *   ** *  *********    *  * ** &p);
**   ***  *   ***  ** *  ***
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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;
 
****  ***  *  * * ** ******* ****   *** 
** **  *  *    *   *     ** **  **  
*    ** **      * *   * *   * **    
* ** ** *  ***   *** * ***  ****  *   ** *  ****** * * ****** *       * *   *****   *   ***  
* *** ** *  * *    ***   **  ***   * * **    
 ***    *  * **   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