C + + Syntax third flow control syntax

One, branch statements

if ()----else if ()-----Else ():

BOOL b1,b2; if (B1) {      //b1==true Run, jump out after run }Elseif(B2)// can be omitted {      //b1==false,b2==true Run, jump out after run }else/ / can be omitted {     // run when all conditions are not valid }

Switch......case....default

intN;Switch(n) { Case 1:     {           //Run when N==1            Break; }      Case 2:     {           //Run when n==2            Break; }     default      //can be omitted     {           //run when no match is found     }}

Second, the Loop statement

while ()

BOOL b;  while (b) {       /        /loop body // when B==true enters the loop body, otherwise does not enter the loop body }

for ()

int i,n;n=ten;  for (i=0; i<n;i++) {       // loop N-Times }

C + + Syntax third flow control syntax