[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

內容已隱藏
#include <stdio.h>
#include <stdlib.h>
int main(){
 **    ***  *   ******   **   n;
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Comments

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

Answer 2

內容已隱藏
#include <stdio.h>
#include <stdlib.h>

int main(){
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}
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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

內容已隱藏
#include <stdio.h>
#include <stdlib.h>

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

內容已隱藏
#include  *  **   *   ** *
int main()
{
* *  *    *******  * * *    * *** n;
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*     **    ** **    *    * * **    ****   *       * * 
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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

內容已隱藏
#include <stdio.h>
#include <stdlib.h>

int main(){
* * * *  **** * * * *  *  a;
***  *  **     * ** **    * *  * b=0.07;
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*** *       ***** * * **     *** ***     * ** 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

內容已隱藏
#include  *     *  **** 
#include *** *   **  *  

int main(int argc, char *argv[])
{

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  * * *** ** * * *  *   *  *  ******* * * **  * **
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    *   * ** *     **  *   *   *  **    ***   * *   *
* *** * * * *  * ****  ***** *  * ** **  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

內容已隱藏
#include <stdio.h>
#include  * * *  ****  * *

int main(int argc, char *argv[]) {
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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 8

內容已隱藏
**  ** *  ** * * **

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

內容已隱藏
*      *   **  * **   
#include   *** *   

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

內容已隱藏
#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