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