Strings (Sort the string) -- Doubt 1

#1

in line -5
str s = strtok (( char )str.c_str() , " ");
what is the use of c_ str function…also why have we type casted str using (char*) .

#2

first see the definition of both the functions

char * strtok ( char * str, const char * delimiters );

const char* c_str() const;

str is string but inside strtok we have to pass char*
so we use c_str() function to convert string to char*
but it return (const char*) not (char*)
so we again type cast it to char*

#3

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