Below is an IPO program which allows the user to find out how many Euros she will get for a given number of dollars. Use the flag controlled sentinel pattern to complete this problem. Use the stod () function, found in the string header, to convert the input to double for processing. sentinel.cpp 1 #include 2 #include 3 #include 4 5 6 int main() 7 { 8 9 10 PERHEEN56 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 using namespace std; } cout << "Dollar to Euro Currency Converter" << endl; cout << ====\n" << endl; cout << "How much (in $) is one Euro? "; double euro; cin >> euro; cout << endl; bool done; // this is the "flag" // Let flag be False // While flag is False // // // // // Prompt user and read value sentinel Then If value Let flag be True Process the value cout << "\n--done--" << endl;; Else

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Types of Function

A function is a process or task that does some operation in the program. Some programming languages may contain built-in functions for certain commonly used tasks. Most programming languages also support user-defined functions, which means a user can write their own function to perform some operation. There are some libraries or header files that contain built-in functions for performing certain tasks.