Answer / i4o

Instead of giving the full program the expectation of this question could be logical skills or applying heuristics in deducing the given problem domain (1-1000) in to smaller pieces. The decision tree could be like whether the number could be even or odd thus eliminating 50% then based on number of digits etc. But it expects to use while loop. So it should be solved mathematically. The following snippet (C#) uses the something similar to binary search (Cutting the problem domain exactly by half each time) and any number could be cracked with 10 questions.

static void Main(string[] args)
{
int low = 1, high = 1000;
int mean;
string userresponse;

while (low != high)
{
mean = (low + high) / 2;

Console.WriteLine("Is the number between {0} & {1}", low, mean);
userresponse = Console.ReadLine();
if (userresponse.CompareTo("y") == 0)
{
high = mean;
}
else
{
low = mean+1;
}
}

Console.Write("You Guessed : {0}", low);
Console.Read();
}

this is to swap to strings....but in output the whole strings are swapped leaving first as it is...why it is so #include<iostream.h> int main() { char a[]="ajeet"; char b[]="singh"; long x=*a; long y=*b; cout<<x<<":"<<y; x=x+y; y=x-y; x=x-y; *a=x; *b=y; cout<<x<<":"<<y; cout<<&a<<endl; cout<<&b<<endl; }

1 Answers  

---

When is the last time you coded in C/C++? What is the most lines of original C/C++ code you have personally written in one project? How confident are you in your ability to write C or C++ without a reference?

1 Answers   Microsoft,

---

How do we balance an AVL Tree in C++?

0 Answers   Impetus,

---

Write about c++ storage classes?

0 Answers  

---

Difference between pass by value and pass by reference?

0 Answers  

---

Implement strcmp

3 Answers   Bloomberg, Citadel,

---

What are the conditions that have to be met for a condition to be an invariant of the class?

1 Answers  

---

find the two largest values among the 6 numbers using control structures : do-while,for,if else,nestedif- else ,while. one or two of them.

0 Answers  

---

write infinite loop in C++ which does not use any variable or constant?

3 Answers  

---

Why is c++ so fast?

0 Answers  

---

Which command properly allocates memory a) char *a=new char[20]; b) char a=new char[20]; c) char a=new char(20.0);

0 Answers  

---

What are the total number of lines written by you in C/C++? What is the most complicated or valuable program written in C/C++?

2 Answers   Intel,

---