User`s manual

Dynamic C User’s Manual digi.com 213
short
Declares that a variable or array is short integer (16 bits). If nothing else is specified, short implies a 16-bit
signed integer.
short i, j, *k; // 16-bit, signed
unsigned short int w; // 16-bit, unsigned
short funct ( short arg ){
...
}
size
Declares a function to be optimized for size (as opposed to speed).
size int func (){
...
}
sizeof
A built-in function that returns the size in bytes of a variable, array, structure, union, or of a data type.
sizeof() can be used inside of assembly blocks.
int list[] = { 10, 99, 33, 2, -7, 63, 217 };
...
x = sizeof(list); // x will be assigned 14
speed
Declares a function to be optimized for speed (as opposed to size).
speed int func (){
...
}