solve all the question 4.3 4.4 and supplementary question

13 C and C++ distinguish between declarations and definitions. what is the distinction? Give an example of each 4.4 Explain the use of header files in C and Ctt. Why doesn't Java use header files? Supplement 1. Consoder the following C program: void fun(void) t int a, b, c; definition 1*/ while (.) int b, c, d: / definition 2*/