How to define Max in define in c

To define the maximum value using the #define directive in C, you can follow the syntax below:

#define MAX(a, b) ((a) > (b) ? (a) : (b))

This macro definition takes two arguments, a and b, and it returns the larger of the two values. The macro uses the conditional operator (a) > (b) ? (a) : (b) to compare the values of a and b. If a is greater than b, the macro returns a, otherwise it returns b.

You can then use the MAX macro in your code to get the maximum value between two variables, like this:

int x = 5;
int y = 10;
int max_value = MAX(x, y);

In this example, max_value will be assigned the value of y (which is 10) because y is greater than x.

Note: It's important to wrap the arguments a and b in parentheses within the macro definition to avoid unexpected behavior when using the macro.