获得系统版本

/*****************************************************
name: get kernel version
written by:1jjk
E-mail:[e-mail]
compile: gcc -O2 -Wall -o kversion kversion.c
******************************************************/
#include<stdio.h>
#include<unistd.h>
#include<stdlib.h>
#include<sys/utsname.h>
int main()
{
    struct utsname uts;
    int a=0,b=0,c=0;
    if(uname(&uts) == -1){
        fprintf(stderr,"Unable to rerieview kernel version\n");    
    //    free(1);

        exit(1);
    }
    sscanf(uts.release,"%d.%d.%d\n",&a,&b,&c);
    printf("The linux kernel version is %s\n",uts.release);
    return 0;
}