String tokenization

#1

why we did (char*)s instead of s simply in
char *s=strtok((char *)str.c_str()," ");
and what does c.str() do

#2

hello @tejuschaturvedi0
c_str() is a function that converts c++ string into char array(c type string) and return its base address as( const char *).

now look at the declaration of strtok.

ss

here it takes char * type pointer but we have const char * pointer
so first we need to explicitly convert const char * to char *
thats the reason why we have (char*) str.c_str()

char *s = strtok( (char * ) str.c_str() , " ");
#3

I understood the c_str() but I am still confused in const char*. And char*.

#4

ss
look at the return type of c_str function.

it const char * .
right?
and what strtok function takes it char * hence we are explicitly converting const char * to char *

#5

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