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C Preprocessor - Programming

Q1:

What will be the output of the program? 
#include<stdio.h>
#define MAX(a, b) (a > b ? a : b)

int main()
{
    int x;
    x = MAX(3+2, 2+7);
    printf('%d\n', x);
    return 0;
}

A 8

B 9

C 6

D 5

ANS:A - 8

The macro MAX(a, b) (a > b ? a : b) returns the biggest value of the given two numbers. Step 1 : int x; The variable x is declared as an integer type. Step 2 : x = MAX(3+2, 2+7); becomes, => x = (3+2 > 2+7 ? 3+2 : 2+7) => x = (5 > 9 ? 5 : 9) => x = 9 Step 3 : printf('%d\n', x); It prints the value of variable x. Hence the output of the program is 9.