How to read a text file consisting of alphanumeric characters, white spaces & punctuations and then convert the data into binary values using ASCII codes, in C language

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C

I want to do bit stuffing. I wrote a program for that. But before doing that I need a program read a text file consisting of alphanumeric characters, white spaces & punctuations and then convert the data into binary values using ASCII codes, in C language.
Please help me.

Here is my bit stuffing code:

#include<conio.h>
#include<string.h>
void main()
{
    int a[20],b[30],i,j,k,count,n;
    clrscr();
    printf("Enter frame length:");
    scanf("%d",&n);
    printf("Enter input frame (0's & 1's only):");
    for(i=0;i<n;i++)
    scanf("%d",&a[i]);
    i=0; count=1; j=0;
    while(i<n)
    {
        if(a[i]==1)
        {
            b[j]=a[i];
            for(k=i+1;a[k]==1 && k<n && count<5;k++)
            {
                j++;
                b[j]=a[k];
                count++;
                if(count==5)
                {
                    j++;
                    b[j]=0;
                }
                i=k;
            }
        }
        else
        {
            b[j]=a[i];
        }
        i++;
        j++;
    }
    printf("After stuffing the frame is:");
    for(i=0;i<j;i++)
    printf("%d",b[i]);
    getch();
}

Thanks in Advance,
Dinesh