simple "read from file and write in cmd" code

#include<stdio.h>
#include<stdlib.h>
int main(int argc, char *argv[])
{
    FILE *fp1;
    char ch1;
    long long ll;

    if((fp1=fopen(argv[1],"rb"))==NULL)
    {
        puts("Error opening file\n");
        exit(1);
    }

    while(!feof(fp1))
    {
        ch1=fgetc(fp1);
        if(ferror(fp1))
        {
            puts("Error reading file\n");
            exit(1);
        }
        printf("%c",ch1);
    }

    fclose(fp1);

}