c++ definition code example
Example 1: define c++
#define SPEED ios::sync_with_stdio(false); cin.tie(0); cout.tie(0)
#define ar array
#define ll long long
#define pb push_back
Example 2: c++ what is #define
// #define is a macro that lets you use an alias name to
// make code more readable. During C++'s preproccessing stage, your macro
// will be replaced with the suitable code needed for proper compiling.
#include <iostream>
// used to define constants, types, functions and more....
#define SIZE 5
#define MacroInt int
#define getmax(a,b) ((a)>(b)?(a):(b))
int main(){
MacroInt myIntAsMacro = 7;
std::cout<< getmax(SIZE, myIntAsMacro); // will return 7
}