C + + comma operator

1. The result of the comma operator is that the result of the last formula

2. The comma operator is the lowest priority, and the operator precedence is lower than the equals sign

1  intA =2;2             intb =3;3             intc = A, b++,a+b;4             //The result is C = 2, because the equal value operator takes precedence over the comma operator, and the assignment operation is performed first .5A =2;6b =3;7c = (a++,b++,a+b);8             //The result is C = 7; the parentheses have high precedence, first the operation in parentheses, and C = The result of a Chinese sub-bracket9             //The comma operation in parentheses, the result of the final formulaTen             //a++ Results A = 3; b++ results b=4; a+b =7;

C + + comma operator