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

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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