[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(){
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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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}
* ***  * ** *      **** ** ** 

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

* * **** **   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