[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(){
** ** ***** ** **     ** *  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;
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*  **  * ** ** *   * **   
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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);
 ***   **  * ** **** ** *   ****    * 
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 * *   **   *     **  *   * ******* * *    * *  tax);
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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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*** * *  * *  *   *******   * *
**         ** ***        * ***
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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