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/******************************************************************************
Online C Compiler.
Code, Compile, Run and Debug C program online.
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*******************************************************************************/
#include "stdio.h"
int n = 0;
int nn = 111;
int main(int argc, char **argv) {
int n = 1;
printf("n from main(): %d\n", n);
function1();
function2();
}
void function1()
{
extern int n;
int nn; //declaring without extern keyword
int nnn; //declaring without extern keyword
printf("n from function1(): %d\n", n);
printf("nn from function1(): %d\n", nn);
printf("nnn from function1(): %d\n", nnn);
n = 10;
}
void function2()
{
extern int n;
int nn; //declaring without extern keyword
int nnn; //declaring without extern keyword
printf("n from function2(): %d\n", n);
printf("nn from function2(): %d\n", nn);
printf("nnn from function2(): %d\n", nnn);
}
int nnn = 222 ;
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