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

* *** **  ** 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