#include<stdio.h>
#include<conio.h>
void main()
{
        char n[10];
        int i,j,k,m;
        clrscr();
        printf("\n\n PLEASE ENTER THE VALUE OF N: ");
            scanf("%s",n);
        for(i=0,j=0;n[i]!='.';i++)
            j++;
        for(i=0,k=0;n[i]!='\0';i++)
            k++;
            k--;
        for(i=k;i>j+2;i--)
        {
            if(n[i] < '5')
                n[i]='\0';
            if(n[i] >= '5')
            {
                n[i-1]=n[i-1]+1;
                n[i]='\0';
            }
        }
        printf("\n\n AFTER ROUND OF N %s",n);
    getch();
}

*************************** OUTPUT ***********************************

     PLEASE ENTER THE VALUE OF N: 12.362514


     AFTER ROUND OF N 12.36

************************************************************************