I need a Programmer

Your task is to develop a C program, called ascii2bin, that reads a string of 1's and 0's as ASCII digits, and outputs the equivalent decimal number Your program must exercises the read() system call to read a single byte, at a time, from stdin validate that the read byte is appropriate for conversion, e.g., it must be either an ASCII '0' or '1' converts each byte into an integer value via a mathematical expression uses the resulting integer as part of the calcuation to determine the final number identifies the end of a input string by either end of file or by a new line End of file is detected when read() returns the value '0' A new line is identified in the ASCII table as either: newline, nl, LF, or \n' prints this final number on stdout returns a value of 0 upon success and 1 otherwise The Algorithm offset = ?; number = 0; retval = read(0, &ascii_value, 1); while (retval == 1) digit = ascii_value - offset; number = number << 1 + digit; retval = read(0, &ascii_value, 1); printf("%d\n", number); return 0; Validation Checks: You should add additional validation checks to your code to catch potential errors. At a minimum, validate the following: that each ASCII input character is one of the following characters: '0', '1', or '\n' that the calculated number does not exceed 2^32 I am having trouble with this program I have most of the code but my output does not match the Professors completely: #include <stdio.h> #include <unistd.h> int main() { int offset = 48; // ascii value of '0' int number = 0; char ascii_value; int retval = read(0, &ascii_value, 1); while ((retval == 1) && (ascii_value != '\n')) { int digit = ascii_value - offset; if ((digit == 1) || (digit == 0)) number = (number << 1) + digit; retval = read(0, &ascii_value, 1); } printf("%u\n", number); return 0; } These are his test file information: $ script [login to view URL] $ ascii2bin 0101 ^d 5 $ cat [login to view URL] | ./ascii2bin ; echo $? 54356 0 $ cat [login to view URL] | ./ascii2bin ; echo $? 138 0 $ cat [login to view URL] | ./ascii2bin ; echo $? 2863311530 0 $ cat [login to view URL] | ./ascii2bin ; echo $? 4294967295 0 $ cat [login to view URL] | ./ascii2bin ; echo $? 1