An integer is basically a whole number and any other number that is not a fraction but a rational number is any number that can be expressed as the quotient or fraction. EVERY INTEGER IS A RATIONAL NUMBER!
An integer is a number that can be either positive or negative. Examples are -5 and 5. Both numbers are integers because they are both negative or positive. Real numbers are everything except for repeating decimals. Pi for example is an irrational number
