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klemol [59]
3 years ago
15

If classes C1 and C2 both implement an interface Cint, which has a method whichIsIt, and if C1 c = new C1( ); is performed at on

e point of the program, then a later instruction c.whichIsIt( ); will invoke the whichIsIt method defined in C1.
a. True.
b, False.
Computers and Technology
1 answer:
Assoli18 [71]3 years ago
5 0

Answer:

FALSE

Explanation:

Because C1 and C2 implement the same interface, they both implement whichIsIt. The variable c is known as a polymorphic variable, meaning that it can change from being an C1 to a C2. So, the message c.whichIsIt( ); may invoke C1's whichIsIt or C2's whichIsIt. This can only be known at runtime.

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zhenek [66]

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2 years ago
Write a c program to print all possible marking schemes of 15 questions each with 3.
andrey2020 [161]

Answer:

#include <math.h>

#include <stdio.h>

#include <string.h>

#define BASE 3

#define NRQUESTIONS 15

void toABC(int n, char* buf, int base, int size) {

   memset(buf, 'A', size);

   buf[size] = 0;

   while (n && size) {

       buf[--size] = 'A' + (n % base);

       n /= base;

   }    

}

int main()

{

   char buf[16];

   for (int i = 0; i < pow(BASE, NRQUESTIONS); i++) {

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       printf("%s\n", buf);

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}

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