CODEWITHSUNDEEP
node.jschild-process
venkat7668
venkat7668

Reputation: 2767

Pass run time arguments to Nodejs child process

I want to compile C program using Nodejs child process.

C .out file execute function: 

var exec= require('child_process').exec;
    exec("test.exe",function(err,stdout,stdin){
            //call back handling code here
    });

C program :

#include <stdio.h>
int main()
{
char msg[8];
 scanf("Please endter %s",&msg)
  printf("Hello world %s\n", msg);
  return 0;
}

How to pass runtime scanf input arguments to child process?

Upvotes: 1

Views: 1443

Answers (1)

mscdex
mscdex

Reputation: 106696

scanf() reads from stdin. Try these:

node script:

var exec = require('child_process').exec;
var cp = exec('test.exe', function(err, stdout, stderr) {
  process.stdout.write(stdout);
  process.stderr.write(stderr);
});
cp.stdin.end('node.js');

C program:

#include <stdio.h>
int main()
{
  char msg[8];
  scanf("%7s", msg);
  printf("Hello world %s\n", msg);
  return 0;
}

This outputs: Hello world node.js

Upvotes: 3

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