A variable declaration provides assurance to the compiler that there is one variable existing with the given type and name so that compiler proceed for further compilation without needing complete detail about the variable. A variable declaration has its meaning at the time of compilation only, compiler needs actual variable definition at the time of linking of the program.
A variable declaration is useful when you are using multiple files and you define your variable in one of the files which will be available at the time of linking of the program. You will use extern keyword to declare a variable at any place. Though you can declare a variable multiple times in your C++ program, but it can be defined only once in a file, a function or a block of code.
So we can do it all. First and important thing Techy gives money back guarantee for the work and second thing delivery on time with quality :), You can check our portfolio, reviews with Best rating 🙂 . Yes we have a team of professionals with 7 years of experience in Software industry 🙂 Been awarded as outstanding Consultant award by latest client. So What are you thinking it’s a win win We are covering everything from money to work which no other company can do. JUST Call us at +61-(7)-30-40-7418 . OR JUST send us an email to our wonderful customer support & sales team at hello .