Understanding more about i++ and i=i+1

Question

I was wondering if there is difference between the two forms of increment. Some of the links says i++ is faster that i=i+1;

Also as one of the person my observation is

Answer 1

rmv=10;

rmv=rmv++;//rmv+1 both are same

printf("1.time=%d",rmv);

//output is 10 than second time increment 10+1 so,value is11

printf("2.time=%d",rmv++);//value is 11