So far, we've seen a number of different operators. Here's a summary of the operators we've covered so far:

What is operator precedence?

Operator precedence refers to the order in which operators get used. An operator with high precedence will get used before an operator with lower precedence. Here's an example:

  int result = 4 + 5 * 6 + 2;

What will be the value of result? The answer depends on the precedence of the operators. In C++, the multiplication operator (*) has higher precedence than the addition operator (+). What that means is, the multiplication 5 * 6 will take place before either of the additions, so your expression will resolve to 4 + 30 + 2 , so result will store the value 36.

Maybe you wanted to take the sum 4 + 5 and multiply it by the sum 6 + 2 for a result of 72? Just as in math class, add parentheses. You can write:

  int result = (4 + 5) * (6 + 2);