Convert char array to single int?

Question

Anyone know how to convert a char array to a single int?

char hello[5]; hello = "12345";  int myNumber = convert_char_to_int(hello); Printf("My number is: %d", myNumber); 

Answer 1

There are mulitple ways of converting a string to an int.

Solution 1: Using Legacy C functionality

int main() {     //char hello[5];          //hello = "12345";   --->This wont compile      char hello[] = "12345";      Printf("My number is: %d", atoi(hello));       return 0; } 

Solution 2: Using lexical_cast(Most Appropriate & simplest)

int x = boost::lexical_cast<int>("12345");  

Solution 3: Using C++ Streams

std::string hello("123");  std::stringstream str(hello);  int x;   str >> x;   if (!str)  {          // The conversion failed.       }