in c

Write a function named find_digits that finds the digits ('O' to '9') in the string parameter str 1 and store them in str2. For example, if str1 contains "Mary has 10 strawberries. Dan has 15 strawberries", then str2 will be "1015". Character library functions such as isdigit() are not allowed. Use pointers and pointer arithmetic to process strings. In other words, eliminate the loop index variables and all use of the operator in the functions. void find_digits(char "str1, char "str2) //add your code )