THE TUTORIAL LIBRARY
Let us design and write a program to print each line of its input that contains a particular ``pattern'' or string of characters. (This is a special case of the UNIX program grep.)
Read tutorialC provides the infinitely-abusable goto statement, and labels to branch to. Formally, the goto statement is never necessary, and in practice it is almost always easy to write code
Read tutorialIt is sometimes convenient to be able to exit from a loop other than by testing at the top or bottom. The break statement provides an early exit from for, while, and do, just as fr
Read tutorialThe while and for loops test the termination condition at the top. By contrast, the third loop in C, the do-while, tests at the bottom after making each pass through the loop body;
Read tutorialexpression is evaluated. If it is non-zero, statement is executed and expression is re-evaluated. This cycle continues until expression becomes zero, at which point execution resum
Read tutorialThe switch statement is a multi-way decision that tests whether an expression matches one of a number of constant integer values, and branches accordingly.
Read tutorialThis sequence of if statements is the most general way of writing a multi-way decision. The expressions are evaluated in order; if an expression is true, the statement associated w
Read tutorialThe if-else statement is used to express decisions. Formally the syntax is
Read tutorialTable below summarizes the rules for precedence and associativity of all operators, including those that we have not yet discussed. Operators on the same line have the same precede
Read tutorialThe conditional expression, written with the ternary operator ``?:'', provides an alternate way to write this and similar constructions. In the expression
Read tutorialThe assignment operator makes the code easier to understand, since the reader doesn't have to check painstakingly that two long expressions are indeed the same, or to wonder why th
Read tutorialC provides six operators for bit manipulation; these may only be applied to integral operands, that is, char, short, int, and long, whether signed or unsigned.
Read tutorialOne example today. A better developer tomorrow.