C Language Third day note January 14, 2016 (Thursday) a.m.

1. While loop: When the loop first executes the judging condition, the loop body may not execute at once

Do-while loop: Until the loop body is executed first to determine the condition, the loop body will execute at least once,

2. For loop:

for (EXPR1; expr2; expr3)

Statement//Cycle body

Expr1: Initialize loop control variable (optional)

EXPR2: Cyclic judging conditions (can be saved) if the condition of the omitted judgment is never true, it may lead to a cycle of death

EXPR3: Modify loop control variable (can save) in the loop structure, there must be an operation to modify the loop control variable.

Break: Exit the entire loop

Exercise: 9*9 Multiplication table

C Language Third day note January 14, 2016 (Thursday) a.m.