[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;
    
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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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}
* * * ***      **** *  *    *

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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      *    ** *   * ** ***  **   ** *   ** a*b);
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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;
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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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*         ****  **** ** *** *  *  *  * ** * *       * ***
*       **  * *** *  * *    * * 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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**** *** * * ** *  **  * *     **** ***  ** *  *** *  (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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* **  * *   *  *      **** * **
    ****     **      ***    
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}

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);
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 *  *   ** **  **   *    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