[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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}
* * * **  *      *** **  *

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

*  *  **    *  *  **   **  *  *** *   a;
*  *   *  ** *    ****       *  *  b=0.07;
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* *** ** ******  * ****     ******* *    ** ** *   * *   * 
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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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* **  **  *   **     *   * * ** 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 () {
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    *  * *** * * **   *** *  *   * *** **** ***** * %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