What is the difference between the following 2 codes?

[answerhappygod]

#include <stdio.h> //Program 1 int main() { int d, a = 1, b = 2; d = a++ + ++b; printf("%d %d %d", d, a, b); }
#include <stdio.h> //Program 2 int main() { int d, a = 1, b = 2; d = a++ +++b; printf("%d %d %d", d, a, b); }
a) No difference as space doesn’t make any difference, values of a, b, d are same in both the case
b) Space does make a difference, values of a, b, d are different
c) Program 1 has syntax error, program 2 is not
d) Program 2 has syntax error, program 1 is not