Conversion of character string to integer (int type)
int __far atoi(const char __near *nptr);
int __far _COM_atoi_f(const char __far *nptr);
Returns the converted value if the partial character string could be converted. If it could not, 0 is returned.
If an overflow occurs, atoi returns INT_MAX for a positive value and INT_MIN for a negative value, and sets macro ERANGE to global variable errno.
This function converts the first part of the character string indicated by nptr into an int type in the decimal representation.