Home Practice Programming C/C++ - DataTypes

C/C++ – DataTypes

Datatypes tell the compiler what kind of value a variable will and hence allocate the size to that variable accordingly.

Various types of datatype supported by C/CPP are:

Integer Types:

TYPE SIZE RANGE FORMAT
short int 2 byte -32,768 to 32,767 %hd
unsigned short int 2 byte 0 to 65,535 %hu
unsigned int 4 byte 0 to 4,294,967,295 %u
int 4 byte -2,147,483,648 to 2,147,483,647 %d
long int 4 byte -2,147,483,648 to 2,147,483,647 %ld
unsigned long int 4 byte 0 to 4,294,967,295 %lu
long long int 8 byte -(2^63) to (2^63)-1 %lld
unsigned long long int 8 byte 0 to 18,446,744,073,709,551,615 %llu
signed char 1 byte -128 to 127 %c
unsigned char 1 byte 0 to 255 %c
Floating Point types:
TYPE SIZE PRECISION FORMAT
float 4 6 decimal %f
double 8 15 decimal %lf
long double 12 19 decimal %Lf

 

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