Print the Environment Variables Using Environ

Name: Print the Environment Variables Using Environ
Uploaded: 2026-09-27T08:52:10+00:00
Duration: 22 min 59 s
Description: How to Print the Environment Variables in a C Program Using "Environ". Extern Char **Environ 2 Answers #Include #Include Extern Char **Environ; //. .. Int I =...

Question

How to print the environment variables in a C program using "environ".

extern char **environ

Accepted Answer

#include <unistd.h>
#include <stdio.h>

extern char **environ;
//...

int i = 0;
while(environ[i]) {
  printf("%s\n", environ[i++]); // prints in form of "variable=value"
}

Answer 2

Do you mean

int main(int argc, char **argv, char **envp)
{
    while(*envp!=null) {
        printf("%s\n", *envp);
        envp++;
    }
    return 0;
}

Print the Environment Variables Using Environ

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Robert Thorne

Print the Environment Variables Using Environ

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Robert Thorne