status = scanf("%d%d", &x, &y);        
     

• scanf reads from standard input
• Reads data from the standard input and stores them according to given format parameter into given locations, skipping leading whitespace.
• %d in the format string means read characters from input and convert to an integer and store at the location specified by the next argument.
• & is the address operator. &x evaluates to the address of the int variable x; &x type is "pointer to int"
• this scanf will read two character strings of digits, convert them to two binary integers and store these integers in variables x and y
• the return value of scanf is the number of successful input conversions. In this case status will be 2 if both inputs are integers.