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The Problem When multiple source files include a header that defines global variables, the linker reports multiple definition errors. Consider a header file (main.h) that directly defines global arrays: #ifndef __MAIN_H #define __MAIN_H #include <stdio.h> #include <stdlib.h> #include <string.h> #define max 100 struct studen ...

Initialization can be explicit or default. Explicit initialization means assigning a value when the variable is defined. Default initialization occurs when a variable is defined outside any function without an explicit initializer, and the compiler automatically sets it to zero (for static and global variables). Explicit initialization: int cou ...