Question

Which of the following functions decomposes the input string into three pans: an initial, possibly empty, sequence of white-space characters?

(a) strtod()

(b) atof()

(c) atol()

(d) strtol()

The question was posed to me in examination.

Question is taken from General Utilities in chapter C Library of C

Answer 1

Correct answer is (d) strtol()

Easy explanation - The strtol() function is used to convert the initial portion of the string pointed to by, to long int representation. First, it decomposes the input string into three pans: an initial, empty, white-space characters (as specified by the isspace function).