Programming in C : Lesson 7.1

In this lesson we are continuing the the character manipulation C program and do more useful things

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[manorhacker]

which is this program?

[oldneuro]

to clarify, c++ returns the value of c before being incremented. ++c returns the value of c after being incremented.

c = 3; d = c++; // now c is 4 and d is 3.

c = 3; d = ++c; // now c is 4 and d is also 4.

[oldneuro]

== is a comparison operator. It is used in a conditional test. = is an assignment operator, it sets the value of a variable.

assignment operations do return values (the value being assigned), and, conditional tests simply test for a non-zero state, so, it is possible to write 'valid' code such as if (x = y) which will set x to y and return true if y is nonzero, as opposed to if (x == y), which will not set any values, but will return true if x and y are equal.

[jtman54159]

never mind i found my problem

[jtman54159]

this program is not working for me

Is it my compiler maybe, I'm using code blocks 8.02

[Chris15118]

++ is an addition operator. For example, if you had an integer i, the following commands are equivalent.

c++

c = c + 1;

c += 1;

There is also the operator ++c. The difference between the two ++ operators is when the computation is done. If you do ++c, it will be done before a comparison, and c++ will be done after.

[subwaybusker]

could you explain what ++ does and why you used == instead of =?