[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;
*  *    ***  *    * *   *  **    m=0.07;
    
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  ** *     * *  *   **** * *  * **  ** **  n*m);
    
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 **  * * *  ** ******** *    ** * *   * *  ** * ******  *  *** *   *  **     *** * * * * * * **  0;
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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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  *  ***** ** *  *   *  *   ** * ** 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

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

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;
** **** *   **  *    * * ****** 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

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

int main(){
**  * * *   * *  ** *  * ** * a;
***    **   **  **    **    b=0.07;
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*   * *  ***     * * **  ** *  * * *    ** &a);
*  **   * ******** *        ** *****      *       * **  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[])
{

  * *** *   **    *   ****   * a;
 * * * *  ** * ** *  *** * **   b=0.07;
**  * **** **   *******  * * *** * * *  * *** ** * *
*****     *  ** * **  *      ****** *    **     ** 
 *   ** **  * *  ** * ***   ***** ** *****   **** (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

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

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

內容已隱藏
#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