Scanf

scanf() gets an input from stdin, do some formating based on whatever it has given on *format

usage

#include <stdio.h>
int 
scanf(const char *format, ...);

example

int i;
scanf("%251d", &i);

takes an input form stdin, puts the first digit of it on i.

return values

return value of scanf depends on whatever if formating worked or failed in some way.