Question

This function remov punctuations but i am confused why punct.find(a_char,0) have 0 in it?? And secondly in the if statement shouldn’t the parameter only be less than 0? Since it either location =true or location =-1? So why use second paramater [location >=punct_length]

string no_punct; //initialized to empty string int s_length s.length(); int punct_length punct.length(); 75 76 78 79 80 81 82 83 for (int i-o; i < s-length; İH) string a-char s.substr(1, 1); //А one-character string int location punct.find(a_char, e); //Find location of successive characters //of src in punct. 84 85 86 87 if (location < θ 11 location >_ punct-length) no_punct no_punct a_char; //a_char not in punct,so keep it 89 90 91 92 return no_punct; //uses functions make lower, remove ounct

Answer 1

1)int location=punct.find(a_char,0);

-> In above statement a_char stores the substring that will chech against punctuation or not.Second parameter 0 is nothing but the starting index of substring.By default it is 0 . This statement compares the string stored in punct and the string in a_char and then it returns the starting index of string if it finds punct string matched with a_char,stores it into location.Otherwise it returns -1 value and stores it.

2) if location is -1 then it is less than zero so that a_char not punctuation