getuid() and C Program

[Ian Dennison_1]

I am having great difficulty in writing the following C program,..

main()
{
int curruid;
char commandline[1024];

curruid=getuid();
strcat(commandline, "/usr/local/bin/script1.sh ");
strcat(commandline, curruid);

system(commandline);
}

This program is designed to get the current uid of the person running the program and pass it to the Shell script for validation. However, C will not permit me to convert the integer value of getuid() to a string to concatenate to the command line. I have tried various combinations and all end up using the number passed as an ASCII value rather than its actual value.

Anyone know of any methods of converting this?

Thanks, Ian Dennison

[RikTytgat · Accepted solution]

Hi,

use:
sprintf(string, "%i", curruid);

The string 'string' will contain the current uid.

Bye,
Rik

[Ian Dennison_1]

Thanks Rik, magical answer!