C++ - convert string/numerics

To string

int number = 123;
std::string converted = std::to_string(number);

To numeric

int number = 123;
char buffer[10];
std::sprintf(buffer, "%d", number);
std::string str(buffer);

float n;
sscanf("12345.00000123", "%f", &n);

int n;
sscanf("12345", "%d", &n);

unsigned int n;
sscanf("12345", "%ud", &n);