[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;
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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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 *  ** **   ** * *** * * * ** * 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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**  *   **       *   * *  ** *******    *******  ****** (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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**    **   *  ** *  ** ** *** 
 *   ****   *   ***** **       ** **  ** * 
 * *****  **  ** **  *** ** ** * 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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      ** ***  *    ***     * *  *   * *  **  **   *   **  * 
   *   ***  **  ** *    *** ***  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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   ** **  * *  *  * ** *  **
     ******   *    **  *  *** * 
 **  *  ** * *      *    *  ** 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