Write a program to report behaviour of Linux kernel including information on 19 configured memory, amount of free and used memory. (memory information)

Input

#include<stdio.h>
#include<sys/sysinfo.h>
#include<stdlib.h>
#include<sys/utsname.h>
using namespace std;

int main()
{
    int p = 0 , q = 0;
    struct sysinfo un;
    p = sysinfo(&un);
    
    struct utsname s1;
    
    q = uname(&s1);

    
    if(p==0 && q==0)
    {
        printf("\n Kerner version : %s", s1.version);
    


        printf("\n Total RAM : %ld MB \n", (un.totalram));
        printf("\n Free RAM : %ld MB \n", (un.freeram));
        printf("\n Used RAM : %ld MB \n", (un.totalram-un.freeram));

    }
    
    else
    {
        printf("Error");
    }	
    
    return 0;
}