Regarding no stored in data type

#1

if a i store a no greater than the range of data type then on cout it will it show a garbage value or there will be some logic behind that value

#2

every data type has a range few are below
char 1 byte -128 to 127 or 0 to 255
unsigned char 1 byte 0 to 255
signed char 1 byte -128 to 127
int 2 or 4 bytes -32,768 to 32,767 or -2,147,483,648 to 2,147,483,647
unsigned int 2 or 4 bytes 0 to 65,535 or 0 to 4,294,967,295
short 2 bytes -32,768 to 32,767
unsigned short 2 bytes 0 to 65,535
long 8 bytes -9223372036854775808 to 9223372036854775807
unsigned long 8 bytes 0 to 18446744073709551615

#3

if you have to store data beyond range of int then use long long int
if you understand hit a like