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what is the usage of extern in c

Cloudy Camel answered on October 11, 2020 Popularity 8/10 Helpfulness 4/10

answer what is the usage of extern in c

related sample usage of the extern keyword in c

what is the usage of extern in c

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#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;
}

Popularity 8/10 Helpfulness 4/10 Language c

Source: www.tutorialspoint.com

Tags: c extern

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Contributed on Oct 11 2020

Cloudy Camel

0 Answers Avg Quality 2/10

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-1

// util.c
int globalVar = 10;
// main.c
#include <stdio.h>

extern int globalVar; // Declare the globalVar defined in util.c

int main() {
    printf("The value of globalVar is %d\n", globalVar);
    return 0;
}

Popularity 9/10 Helpfulness 1/10 Language whatever

Source: chat.openai.com

Tags: c extern

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Contributed on Oct 16 2023

Nice Narwhal

0 Answers Avg Quality 2/10

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what is the usage of extern in c

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