Sizeof doesn't return the true size of variable in C

Question

Consider the following code

#include 

void print(char string[]){
 printf(\"%s:%d\\n\",string,sizeof(string));
}

int main(){
 char string[] =         


        

Answer 1

You asked the systems for the sizeof(the address to the begining of a character array), string is an object, to get information about it's lenght out you have to ask it through the correct OO interface.

In the case of std::string the member function string.length(), will return the number of characters stored by the string object.

Answer 2

It is the size of the char pointer, not the length of the string.

Use strlen from string.h to get the string length.