c++ code problems

Ok i was making my script and following instructions to and here is what i entered:
#include <iostream>
using namespace std;

int main() {
double ctemp, ftemp;

cout << "Input a celsius temp and press enter: ";
cin >> ctemp;
ftemp = (ctemp * 1.8) + 32;
cout << "Fahrenheit temp is: " <<ftemp;

return 0;
}
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And so after i enter it and compile it it only says the first part and lets me enter something then closes right after!What is wrong!!!!!

because it has nothing else to do ?