#include <stdio.h> int main() { int var1,var2; var1=10; var2=10; var2=2*(++var1+2) - 2*(--var1-2); printf("Var1=%d \n Var2=%

Question

Why the output in Var1=10 and Var2=10?
(Tomorrow I will have a test please help)

Answer 1

var1 = 10
because:
++var1 is 11 and
- - var1 reduced it to 10 again.

var2 = 10
because :
var2 = 2 * (11 + 2) - 2 *(10-2)
= 2*13 - 2*8
= 26 - 16 = 10