The function sqrt() takes a single argument (in double ) and returns the square root (also in double ). The sqrt() function is defined in math. h header file. To find square root of type int , float or long double , you can explicitly convert the type to double using cast operator.
All are the valid variable name because all of follow the identifiers rule
Relational operators always yield a TRUE or FALSE result. Remember that a TRUE result evaluates to any non-zero value (often 1), while a FALSE result evaluates only to zero. Relational operators have a lower precedence than the arithmetic operators.