[learn C and fly] day 5 chapter 2 program in C language (Exercise 2)

Wrong questions 1

1. This chapter introduces 3 Operator , They are arithmetic 、 Assignment and relational operators , The order of priority from high to low is （ ） Operator 、（ ） Operator 、（ ） Operator .

answer ： The arithmetic , Relationship , assignment .
2.C Language 3 A basic control structure is （ ） structure 、（ ） The structure and （ ） structure .
answer ： The order , Branch , loop .
3. And mathematical formula \sqrt {s(s-a)(s-b)(s-c)} Corresponding C Language expressions are （ ）.
answer ：
sqrt(s*(s-a)(s-b)(s-c))
analysis ：
stay c There is a function library in the language math.h, There are functions in it sqrt() Used to indicate the square of the opening