[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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   *******    *  *   *  ** *  m=0.07;
    
**   *  * *    ******** **    * *  * *  * ***** *   * *
***      ** * * ***     *   * * *  ***  *   *  **   **  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(){
*  ****  * * *   ** ** ****   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(){ **   **** * **** * **         *  *  **      
 ******  * * ****   *    * * ** a;
* * **** *  * * *   *  ******* *  b=0.07;
****   ** **** *** ** * ***
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* * *    **  *   ***      
**       * *  *  *** ** ***  *   *    ***** ***    ** a*b);
**  **   * * **  * *    * ** ******* **  **** ** (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;
 *    ** * * * **** ***  *
 ***  **** ****** ** *  *  * *** **** **** *** &a);
 * *** * * **  * **  *  ** **        *** *    *   *  a*b);
**  *** *** * **   ** *   
 *   *   * *   *  *  ***** ***  * ** ** ****     (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[])
{

  * *    ** ** *  * * *    a;
       **   ** *******    b=0.07;
*****       * *    *  * **  *  **  *   **** *  *  *** 
*   * *  ** ** * ***  * *    ****  *****   * *  ** **  *  
***     *  *    **   ** *      * * **   *     * ** ***    (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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  ** ****  ** *  *  * ** * * * ********** * ** &p);
 ** * **    * **  ** * *   ****  * * 
** *   **  *   **** **  **** **  **
 ** *  ** ** * * * **   * ******  **   * *    **** 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