1. std::to_string

Convert numerical value to string

Returns a string with the representation of val.

 

The format used is the same that printf would print for the corresponding type:

 

type of val	printf equivalent	description
int	"%d"	Decimal-base representation of val. The representations of negative values are preceded with a minus sign (-).
long	"%ld
long long	"%lld
unsigned	"%u"	Decimal-base representation of val.
unsigned long	"%lu
unsigned long long	"%llu
float	"%f"	As many digits are written as needed to represent the integral part, followed by the decimal-point character and six decimal digits. inf (or infinity) is used to represent infinity. nan (followed by an optional sequence of characters) to represent NaNs (Not-a-Number). The representations of negative values are preceded with a minus sign (-).