C++ Help.

Write the function that counts the number of occurrence of a specific decimal digit in a string

For example:

int countDigit(int, string ) ; // Function prototype

int main()

string str = "12314561asd vd&*1";

int digit = 1;

int cnt = countDigit(1, str);

// Expected output : Number of 1 in the string is 4

cout << "Count of digit " << digit << " in the string is " << cnt;

}