READING DATA FROM A SEQUENTIAL ACCESS FILE

• Reading a sequential access file.

        –Create a FILE pointer, link it to the file to read.
                myPtr = fopen( “myFile.dat”, “r” );
        –Use fscanf to read from the file.
             :Like scanf, except first argument is a FILE pointer.
         fscanf( myPtr, “%d%s%f”, &myInt, &myString, &myFloat );

        –Data read from beginning to end.
        --File position pointer – indicates number of next byte to be read/written.
            :Not really a pointer, but an integer value (specifies byte location).
            :Also called byte offset. 
        –rewind(myPtr) - repositions file position pointer to beginning of the file (byte 0).