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#include <stdio.h> static int internalVar = 20; void printInternalVar(){ printf("internalVar: %d\n", internalVar); } void modifyInternalVar(int value){ internalVar = value; } /* int main(){ printf("main_internalVar: %d\n", internalVar); internalVar = 300; printf("main_internalVar: %d\n", internalVar); return 0; } */
#include <stdio.h> // μ™ΈλΆ€ μ—°κ²° ν•¨μˆ˜λ₯Ό μ‹€ν–‰ν•  λ•ŒλŠ” μ›λž˜ 파일의 mainν•¨μˆ˜ μ£Όμ„μ²˜λ¦¬ν•˜κ³  μ‹€ν–‰ extern void printInternalVar(); extern void modifyInternalVar(int value); int main(){ printInternalVar(); modifyInternalVar(50); printInternalVar(); return 0; }

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