Write a C++ function to read N words from a file called input.txt (which is in the same directory as your code). Then the function should find if a given expression exists in any of the words. The function then writes the words that contain that expression in output.txt. The function prototype is as follows:

void findExpression(int N, char expr[ ], int sizeexpr); /* reads N words from input.txt, looks for the expression in the expr array (which has sizeexpr letters) in each word, and writes the words that have the given expression in output.txt */

For example, assume input.txt contains the following words: Boston cheers astonished Stop Providence After function call char myword ]-"sto" findExpression (5, myword, 3) output.txt will include Boston astonished Make sure to test your function as needed