void set_flag(unsigned int flag_holder[], int flag_position); void unset_flag(unsigned int flag_holder[], int flag_position); int check_flag(unsigned int flag_holder[], int flag_position); void display_32_flags_as_array(unsigned int flag_holder); void display_flags(unsigned int flag_holder[], int size); //This is the main inside the client int main(int argc, char* argv[]) { unsigned int flag_holder[5] = { 0 };//Set the first integer to zero and all others to zero by default. set_flag(flag_holder, 3); set_flag(flag_holder, 16); set_flag(flag_holder, 31); set_flag(flag_holder, 87); display_flags(flag_holder, 5); printf(" "); unset_flag(flag_holder, 31); unset_flag(flag_holder, 3); set_flag(flag_holder, 99); set_flag(flag_holder, 100); display_flags(flag_holder, 5); return 0; } Here I have changed the functions so that they take an array of integers instead of just one integer. This allows me to imagine that I have a long array of bits instead of an array of integers. The functions can now set, unset, check and display flags for any bit in the array of 5 integers that I have made (and should work for any size array as long as your bit index is in bounds of your array). I also changed the display behavior. Daily 4 displayed the flags as you would see them in a binary number but since this program is moving away from the idea of a binary number to store bits and moving toward the idea of having an array of bits the display_32_flags_as_array function will display the [0] bit first then [1] and so on up to 31 whereas the display_32_flags function in daily 4 displays the [31] bit first and down to [0]. Similarly the display_flags function now takes an array of integers and displays one integer per line using the display_32_flags_as_array function. . Your output should look exactly like the following 0001 0000 0000 0000 1000 0000 0000 0001 0000 0000 0000 0000 0000