What is pi, and how did it originate? Succinctly, pi--which is written as the Greek letter for p, or --is the ratio of the circumference of any circle to the diameter of that circle. Regardless of the circle's size, this ratio will always equal pi. In decimal form, the value of pi is approximately 3.14.
Inverted repeat. An inverted repeat (or IR) is a single stranded sequence of nucleotides followed downstream by its reverse complement. The intervening sequence of nucleotides between the initial sequence and the reverse complement can be any length including zero. When the intervening length is zero, the composite sequence is a palindromic sequence.
// Palindrome.C: A palindrome is a string that is spelled the same way forward and backward. // This code verifies the string entered IGNORING CAPITALIZATIONS, SPACES and P â¦ UNCTUATIONS. // Most of the CRT library functions used are with security enhancements optimized for MS Visual C++ [2010].