[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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}
** **    *  ******* ***   

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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********  * ** ** *******   * * **   *  *** **  *  *** (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;
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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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****  * ** * * **    *    *
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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);
**** *    *  * *   *   *   *   * *  **   ** * ** *****  ** 
    ** * ****     *** * 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