C How To Use Extern Variable Code Example


Example: what is the usage of extern in c

#include <stdio.h> extern int x = 32; int b = 8; int main() {    auto int a = 28;    extern int b;    printf("The value of auto variable : %d\n", a);    printf("The value of extern variables x and b : %d,%d\n",x,b);    x = 15;    printf("The value of modified extern variable x : %d\n",x);    return 0; }

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