[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(){
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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(){  ****  * * *** * **  **  * **   ** *** 
*****   *****  *  ***  a;
*   ** *** **   *   **   * *** ****  b=0.07;
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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;
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** ** **  *****     ****  = 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;
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** *    *    *  **  *     
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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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* * * *  *  *    * **** * *
    *** *  **   *      *   **  * *
*  **  *** ****  * ***  * *  0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output

Answer 8

Hidden content!
 *  **    * *    *** 

int main () {
***** *  **
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** *   * ** ******     ** **  **  *   *** *    *  %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