How to check if a variable has been initialized in C?

Question

Is there a way to check if a variable has been initialized or not in C?

Consider the following example,

int main(){
    int a = 3, b = 7, c;

    if          


        

Answer 1

C is a compiled language which doesn't support runtime variable binding, while Perl is a interpreted language which support dynamic typing. So you can check the definition of a variable in Perl, but not in C.

When you declare a variable in C int c;, this variable c is defined but without initialization. The declaration and definition are in one statement.

The definition of a variable in C is not checked by code writer. The compilers do it for you. When compile and link your C code, the compiler will check all variable's definitions. An error will be invoked and the compiling or linking process will stop if there are undefined variables found in your code.

Hope this will make you distinguish the differences.