while statament

 in this branch of my C++ series, I will show how to use while functions. A while function will be a loop until its parameter ( like the (b < 5) part of a if statement) evaluates false, in which it will exit the while loop and continue with the code. Example:


int b = 1;



while (b <= 10)


std::cout <<  " b is less than 10 ";



std::cout <<  "b is now greater than 10";



line 1: declares and sets b to 1 in one shot

line 4: declares that there will be a while statement following and the parameter is "b is less than or equal to 10"

line 6: displays " b is less than 10 "

line 7: increments b by 1. So every time the program sees b++, it will add 1 to b (only in C++, not C. For c you will have to use "int temp; temp = b + 1; b = temp;"

line 9: once b is 11 or greater, it displays "b is now greater than 10"


This statement can also be very useful if you want to have a infinite loop:


while (1)





while (1 == 1)



check back for more C++ tutorials.









File3.zip280 bytes