Sorry for asking so much, but im doing lots of excersises and im having trouble with some things.

Now im doing a script with a Binary search function. But im having trouble with 2 things:

-I dont know how to know if the searchKey entered isnt in the given array.

-Im having trouble with the exiting, since sk is and int and "x" should be a char or a string. So if i initialize sk as a string, how can i convert it to an int?

Here's the script for you to understan what im talking about:

Code:#include <iostream> #include <cmath> using namespace std; int BinSearch(int data[], int numElements, int searchKey); int main() { int data[]= {1, 4, 5, 6, 9, 14, 21, 23, 28, 31, 35, 42, 46, 50, 53, 57, 62, 63, 65, 74, 79, 89, 95}; cout << "{"; for(int i=0; i<23; i++) { if(i != 0) { cout << ", "; } cout << data[i]; } cout << "}" << endl; int sk = 0; while(sk != 'x' && sk != 'X') { cout << "Enter the search key (or \"x\" to exit): "; cin >> sk; cout << sk << " is in position " << BinSearch(data,23,sk) << endl; } cout << "Exiting..." << endl; system("PAUSE"); } int BinSearch(int data[], int numElements, int searchKey) { int mid = ceilf((float)numElements/2); int result = 0; while(true) { if(searchKey == data[mid]) { result = mid; break; } else if(searchKey > data[mid]) { if(mid % 2 == 0) { mid += mid/2; } else { mid += ceilf((float)mid/2); } } else if(searchKey < data[mid]) { if(mid % 2 == 0) { mid -= mid/2; } else { mid -= ceilf((float)mid/2); } } } return result; }