[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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  ** * **     * **  ** * *   ** 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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*****  * **  *** * **   **  ***

  ***   * *   * ** ****  *  ** *        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;
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* ***  **   ****  * *   * * * = 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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* * *  **  * * * ** **  * ***  b=0.07;
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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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*  **  * * * *   **** * * 
          ****  ******* **** 
 * ***    ** * * * *     *****   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