What is the return type of getchar()?

Identify the output of the following C code:

Which will be used with physical devices to interact from C++ program? 

What will be the capacity of the vector after 10 is pushed into the vector in the following C++ code?

What will be the output of the following C++ code?

#include 
using namespace std;

int main()
{
    int a = 7, b = 4, c;
    c = (a > b) ? a : b;
    cout << c;
    return 0;
}

Why is a reference not the same as a pointer?

#include <iostream> 

#include <functional>

#include <algorithm>

using namespace std;

int main () 

{

int numbers[] = {3, -4, -5};

       transform ( numbers, numbers + 3, numbers, negate<int>() );

for (int i = 0; i < 3; i++)

cout << numbers[i] << " ";

}

What is the output of the following C program?

void main()

{

 int f=1,i=0,j=4;

  char *x="CYBER", *y="REBYC";

  while(j)

  if(x[i++]!=y[j--])

  f=0;

  (f>0?printf("EQUAL !"):printf("NOT EQUAL !"))?printf("THIS IS TRUE"):

  printf("IT IS WRONG");

}

What is the output of the following C++ code?

1. #include <iostream>
2. using namespace std;
3. int main()
4. {
5. // https://app.abekus.com/l/answer
6. for (int i = 0; i < 5; i++)
7. {
8. cout << "Thank you Abekus" << endl;
9. }
10. return 0;
11. }

What is an lvalue?