Systems

What is the binary number '11010110' in hexadecimal?

• 0x56

• 0xD6

• 0xA9

• 0x7B

For IEEE 754, what is the number of bits used for the sign, exponent, and fraction?

• 1 sign, 7 exponent, 24 fraction

• 2 sign, 6 exponent, 24 fraction

• 1 sign, 8 exponent, 23 fraction

• 1 sign, 8 exponent, 24 fraction

Which of the following is negative 7 in 4-Bit Two's Complement?
Hint: +7 is 0111

• 1000

• 1111

• 0111

• 1001

What is the output of the following C code snippet?

• 255

• -1

• 0

• Does not compile

Which of the following statements correctly checks if two strings str1 and str2 are equal in C?

• if (str1 == str2)

• if (strcmp(str1, str2) == 0)

• if (str1.equals(str2))

• if (*str1 == *str2)

What is the purpose of a function prototype in C?

• To define the body of a function

• To declare a function for later use

• To initialize variables used in a function

• To call a function

When passing a string to a function in C, what is actually being passed?

• The first character of the string

• The entire string as a copy

• The address of the first character of the string

• The length of the string

What is the correct sequence of steps for writing to a file in C?

• Open, Write, Close

• Write, Open, Close

• Close, Open, Write

• Open, Close, Write

Which 'fopen' mode is used for opening a file for both reading and writing, without creating a new file if it does not exist?

• r+

• w+

• a+

• rb+

Which function is used in C to read formatted input from the console?

• printf

• scanf

• fgets

• fprintf