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What is the difference between i++ ++i in a for loop? The way for loop is processed is as follows 1 First, initialization is performed (i=0) 2 the check is performed (i < n) 3 the code in the loop is executed 4 the value is incremented 5 Repeat steps 2 - 4 This is the reason why, there is no difference between i++ and ++i in the for loop which has been used
Is there a performance difference between i++ and ++i in C? Even though the performance difference is negligible, and optimized out in many cases - please take note that it's still good practice to use ++i instead of i++ There's absolutely no reason not to, and if your software ever passes through a toolchain that doesn't optimize it out your software will be more efficient Considering it is just as easy to type ++i as it is to type i++, there is
puzzle - i = ++i + ++i; in C++ - Stack Overflow Modifying a value twice in the same expression (in this case your two ++i's) is undefined in both C and C++ and you CANNOT rely on its behavior to be the same across compilers
How do the post increment (i++) and pre increment (++i) operators work . . . The way I look at these expressions are in terms of using passed on What value on the right am I using and what value is being passed on to the next term given int i = 5 ++i - increments to 6, uses 6 and passes on 6 --i - decrements to 4 uses 4 and passes on 4 i++ - uses 5 increments to 6 and passes on 6 i-- - uses 5 decrements to 4 and passes on 4 Examples (uses passes on) prefix operations