Post Increment / Decrement in C

Post-Increment :  y = a ++
Steps :

1. Value of a is assigned to y
2. Then value of a is incremented

In Short :

• When Postfix (++/-) is used with a variable in an Expression ,The Expression is evaluated first using the original value of variable and then variable is incremented/decremented by one 
• Here a is incremented /decremented after use

#include<stdio.h>void main(){int a,b,x=10,y=10;a = x++;b = ++y;printf("Value of a : %d",a);printf("Value of b : %d",b);}

Output :

Value of a : 10Value of b : 11

Why Output is 10 in case of Post-increment : 

1. Post (after) , Value of x is first assigned to a
2. Then x is Incremented

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